The Etape Caledonia is Britain's original closed-road sportive, and in a crowded UK sportive calendar, it still holds a particular place. One hundred and thirty-seven kilometres through Highland Perthshire on roads entirely closed to traffic. Past Loch Rannoch. Over the exposed moorland between Glen Lyon and Kenmore. Up the flanks of Schiehallion. Around five thousand riders on some of the most spectacular roads in the British Isles, with no cars, no HGVs, and no nervous moments at roundabouts.
The terrain is not extreme. There is nothing here that compares to Hardknott on the Fred Whitton or the endless climbs of the Dragon Ride. The 1,700m of elevation is composed of dozens of short, sharp hills of 1-3km at 5-10 per cent — relentless undulation rather than any single defining climb. But the Etape has a factor that most English sportives do not: Scottish Highland weather in May. Five degrees and horizontal rain on exposed moorland at kilometre 90 changes a manageable ride into a serious test. That combination — accessible terrain plus unpredictable weather — is what makes the Caledonia worth training for properly.
Key Takeaways
- 12-week build for the 137km route with a 6-8 hour weekly base
- Peak volume 8-10 hours/week with one endurance ride building to 5-6 hours
- 2.5 W/kg minimum for comfortable completion, 3.0+ W/kg for a strong ride
- Train endurance and sweet spot — the terrain rewards sustained aerobic capacity
- At least two long rides in truly poor weather before race day
- Waterproof jacket, full-finger gloves, arm warmers, gilet, overshoes — non-negotiable
- 60-80g carbs/hour, force-fuel in cold weather
What Makes the Etape Caledonia Different
Closed roads change the riding experience entirely. Most UK sportives run on open roads where you are sharing space with traffic, managing roundabouts, and dealing with the mental load of road awareness. The Etape Caledonia closes every road on the route. You ride on the wrong side when the road curves that way. You take the racing line through corners. You ride two or three abreast and chat. For riders who train primarily on busy roads, the closed-road format is a revelation — and a genuine safety advantage on Highland single-track sections where open-road riding would be nerve-wracking.
The terrain accumulates rather than peaks. There is no single climb on the Caledonia that would trouble a strong rider in isolation. Schiehallion's approach is the steepest sustained effort — roughly 3km with gradients touching 10 per cent — but it is not a 30-minute Alpine grind. The difficulty is in the accumulation: dozens of 1-3km climbs at 5-10 per cent, constant undulation with almost no flat road, and the relentless nature of Highland terrain that never lets you settle into a rhythm. By kilometre 100, each short hill feels harder than it should because of what came before it.
The weather is the defining variable. Mid-May in Highland Perthshire sits in a band where anything is possible. The event has run in blazing sunshine with riders overheating, and in horizontal rain with near-freezing temperatures on the moorland sections. The altitude of the route — 200-400m above sea level across the exposed middle section — creates its own microclimate. A sheltered glen at 12 degrees can give way to open moorland at 5 degrees with 40km/h wind inside the same hour. Riders who prepare only for the terrain and ignore the weather are the ones in trouble by the final quarter.
The scale is well-managed but genuine. Five thousand riders is large enough to create group dynamics on the road but small enough that the event runs smoothly. Feed stations are well-stocked and spaced sensibly. The organisation has nearly twenty years of experience. This is not a pop-up sportive on open roads with two marshals and a van — it is a properly run event on properly closed roads, and that quality of organisation makes the day materially better.
Course Profile and Key Challenges
The 137km route loops through Highland Perthshire, starting and finishing in Pitlochry. The profile is relentlessly rolling with three distinct sections that demand different approaches.
Schiehallion Climb
The signature ascent. The approach from the east rises roughly 3km with the steepest ramps touching 10 per cent. It is not technically difficult — the road is well-surfaced and wide enough — but it arrives after the early rolling kilometres when your legs are still fresh enough to be tempted into going too hard. The gradient is honest: 5-7 per cent average with short pitches at 9-10 per cent. Use the climb time calculator to estimate your time based on current power, and check your VAM to set a sustainable climbing rate. The mistake is attacking Schiehallion like a hilltop finish. It is not. It is the first meaningful effort of the day, and there are 90-100km of rolling terrain still to come.
Glen Lyon Approach
The road into Glen Lyon is one of the most spectacular sections of any UK sportive — single-track Highland road winding along the valley floor with mountains rising on both sides. The climbing here is deceptive. The road undulates constantly with short, punchy ramps of 500m-1km at 6-8 per cent between flatter sections along the glen. The cumulative elevation through this section is significant without any single climb standing out. The glen is also relatively sheltered compared to the exposed moorland that follows, which creates a false sense of comfort. Riders who push the pace through Glen Lyon because the wind is calm discover the energy cost when they emerge onto open terrain.
Kenmore Hill and the Exposed Middle Section
The climbing out of Kenmore towards the moorland is where the day's difficulty compounds. The gradients are moderate — 5-8 per cent for 2-3km — but by this point you have 80-100km in the legs, and the exposed moorland that follows offers no shelter from wind. This is the section where crosswinds become the primary challenge. Highland moorland above 300m with no trees, no hedgerows, and no buildings to break the wind creates conditions where a 30km/h crosswind adds 15-20 per cent to the effort of simply holding a straight line. Check the wind chill calculator for this section — a 10 degree day with that wind at elevation feels like 2-3 degrees at speed, and the exposed section can last 20-30km.
The Final Descent and Run-In
The last 15-20km back towards Pitlochry descends through wooded hillside on good roads. In dry conditions, this is a reward — fast, flowing, and scenic. In wet conditions, the descents demand caution: Highland road surfaces hold water, leaf litter in wooded sections creates slippery patches, and cold-stiffened hands make braking less precise. Riders who have dressed properly and fuelled well enjoy this section. Riders who are cold, depleted, and gripping the bars with numb fingers find it stressful rather than enjoyable.
Fitness Benchmarks
Use the W/kg calculator to establish your current power-to-weight ratio.
| Metric | Completion | Comfortable | Strong | |---|---|---|---| | FTP (W/kg) | 2.0-2.5 | 2.5-3.0 | 3.0-3.5+ | | Sustained climbing W/kg (10-15 min) | 2.0 | 2.5 | 3.0+ | | Weekly training hours (peak) | 6-8 | 8-10 | 10-12 | | Longest training ride | 4 hours | 5 hours | 5-6 hours | | Weekly climbing volume (peak) | 800m | 1,200m | 1,500m+ |
The Etape Caledonia is an endurance event, not a power event. The demands are aerobic capacity over 4-6 hours, the ability to repeat short climbs at moderate intensity dozens of times, and the resilience to maintain effort when conditions deteriorate. A rider with 2.5 W/kg and genuine endurance will have a better day than a rider with 3.5 W/kg whose longest training ride is three hours.
The 12-Week Training Plan
Phase 1: Base (Weeks 1-4) — Aerobic Foundation
Volume: 6-8 hours/week rising to 8-9 hours by week four.
The base phase builds the aerobic engine that will carry you through 137km. Four to five rides per week. Eighty per cent of the volume in Zone 2 — genuine conversational pace. The temptation to ride every session at moderate effort is the most common base-phase mistake. Easy stays easy. Hard stays hard. The middle kills the adaptation.
Anchor session: Long ride building from 2.5 hours in week one to 4 hours by week four. Ride rolling terrain if you have it. The Caledonia never flattens out, so training on flat roads misses the specific demand. If your local roads are flat, add one short climb loop within the long ride — even 50m of elevation gain repeated six or eight times is more specific than 4 hours of pancake-flat Zone 2.
Midweek structure: Two rides of 60-75 minutes at Zone 2. One ride of 60-90 minutes with a 20-minute tempo block at 85-90 per cent of FTP to begin introducing intensity without overloading.
Off-bike: Two sessions of single-leg strength work — lunges, step-ups, Bulgarian split squats, single-leg press, and core stability (planks, side planks, dead bugs). Twenty to thirty minutes per session. The hills on the Caledonia are short enough that muscular fatigue is not the primary limiter, but leg durability across 137km of constant undulation benefits from off-bike strength in the base phase.
Track your weekly load with the training load calculator to keep progression steady — roughly 5-8 per cent volume increase per week through this phase.
Phase 2: Build (Weeks 5-8) — Sweet Spot and Climbing Capacity
Volume: 8-10 hours/week.
The build phase introduces the specific intensity that matches the Caledonia's demands. Two quality sessions per week alongside continued endurance volume.
Key session 1: Sweet spot intervals. 3x12 minutes at 88-93 per cent of FTP in week five, building to 3x15 minutes by week eight. Five minutes recovery between efforts. Sweet spot is the most specific intensity for this event — the Caledonia's climbs are short enough that you ride them at sub-threshold, but long enough and frequent enough that your body needs to sustain near-threshold effort repeatedly. This is not a threshold event. It is a sustained-effort event, and sweet spot trains exactly that capacity. Check your TSS after each session to track training stress.
Key session 2: Climbing repeats. Find a hill of 2-5 minutes at 6-10 per cent. Ride 5-6 repeats at 90-95 per cent of FTP, seated, at 70-80rpm. Recover on the descent. This replicates the exact demand of the Caledonia's short climbs — above Zone 2, below threshold, repeated until the legs are heavy. If your local terrain lacks climbs, use a turbo trainer with a gradient simulation — Zwift's rolling routes work, though outdoor repeats on real gradients are always more specific.
Long ride extension: Build to 4.5-5 hours by week eight with 800-1,200m of climbing. One of these long rides — ideally in weeks six or seven — should be done in properly bad weather. Rain, cold, wind. Do not wait for a good day. The Caledonia may deliver its worst weather, and the first time you ride five hours in horizontal rain should not be race day. You need to know how your kit performs, how your hands feel at hour four in the cold, and how your eating habits change when you are shivering. This is weather rehearsal, and it is training.
Phase 3: Sharpen (Weeks 9-10) — Race-Specific Effort
Volume: 9-10 hours/week. Quality rises, volume holds.
The over-distance ride (week 9 or 10 weekend): One ride of 5-6 hours with 1,500m of climbing at a pace you could sustain for seven hours. Not race pace — slightly below it. Full fuelling rehearsal. Eat what you plan to eat, drink what you plan to drink, wear what you plan to wear. Use the fuel planner to map your intake across the ride. This is the final long-ride stress test. If you finish this ride feeling tired but intact, the fitness is there. If you finish destroyed, the training may need another week of build before tapering.
Midweek sharpening: One session of 4x8 minutes at 95-100 per cent of FTP with 4 minutes recovery. This is the only true threshold work in the plan, and it sits here for a reason — it tops up the aerobic ceiling without the fatigue cost of sustained threshold blocks earlier in the plan. The Caledonia does not demand threshold. It demands repeated sub-threshold. But a higher ceiling makes sub-threshold feel easier.
Wind-riding practice: At least one midweek ride should be deliberately done on exposed roads in wind. Practise riding in crosswinds — holding a straight line, adjusting body position, and using echelons if you are riding with others. The moorland sections of the Caledonia are proper crosswind territory, and the skill of riding efficiently in wind is trainable. It is not just about fitness; it is about positioning, pedal timing, and relaxing the upper body.
Phase 4: Taper (Weeks 11-12) — Arriving Fresh
Week 11: Volume drops to 6-7 hours. Three rides of 60-90 minutes with two short efforts of 5 minutes at 90-95 per cent of FTP in each. One easy ride of 90-120 minutes. No long ride. The fitness is in the bank. The temptation to squeeze in one more big ride is the taper's worst enemy.
Week 12 (race week): Two rides of 45-60 minutes, Monday and Wednesday, with 3-4 openers of 30 seconds at high intensity followed by full recovery. Thursday off. Friday a 20-minute spin if travel allows. Saturday: race day. Arrive with the legs fresh, the kit packed, and the fuelling plan written down.
Key Sessions in Detail
Sweet Spot Endurance (The Backbone Session)
Warm up 15 minutes. Ride 3x12-15 minutes at 88-93 per cent of FTP. Five minutes at Zone 1 between efforts. Cool down 10 minutes. Do this on rolling terrain if possible — the constant gradient changes are more specific to the Caledonia than holding a number on a flat road. This session teaches your body to hold sub-threshold effort repeatedly with incomplete recovery, which is precisely what 137km of Highland undulation demands.
Tempo Endurance (The Saturday Grinder)
Your long ride should include a 60-90 minute block at 75-85 per cent of FTP within the middle third. Not the first hour — you are already warmed up by then. Not the final hour — you are managing fatigue. The middle block. This trains the ability to hold meaningful power when you are already two or three hours in, which is the exact moment on the Caledonia when the moorland section arrives.
Wind-Riding Practice
Choose the most exposed road you can access. Ride 60-90 minutes in crosswind conditions. Focus on keeping a stable line without death-gripping the bars. Relax the shoulders. Anticipate gusts. If riding with a partner, practise echelon formation — half a wheel behind and to the lee side. Twenty minutes of deliberate wind practice teaches more than two hours of sheltered riding about what the exposed Highland sections will feel like.
Cold-Weather Long Ride
At least once before race day, ride 4-5 hours when the forecast is poor. Rain and 8-10 degrees is ideal. Wear the kit you plan to race in. Eat on schedule. This single session will reveal problems you cannot find on a dry day: gloves that soak through, a jacket that flaps in wind, overshoes that leak, a stomach that rebels against cold gels. Fix every problem the training ride reveals. The Caledonia in poor weather is not the day to discover your rain gear does not work.
Nutrition Strategy
The Etape Caledonia is a 4-7 hour ride depending on fitness and conditions. The feed stations are well-stocked and spaced at sensible intervals — typically every 25-35km. The fuelling challenge is not availability. It is the cold.
Cold weather suppresses appetite. Riders who eat instinctively in 20-degree sunshine often stop eating when the temperature drops to 8 degrees and the rain starts. By the time they feel hungry, they are already glycogen-depleted and the damage is done. Force-fuel on a timer. Set an alarm on your head unit every 20 minutes. Eat whether you want to or not.
Use the fuelling calculator and the hydration calculator to set targets.
| Time on Bike | Carbs (g) | Fluid (ml) | Notes | |---|---|---|---| | 0:00-1:00 | 60-80 | 500-600 | Start eating within the first 20 minutes. One gel plus half a bar. | | 1:00-2:00 | 60-80 | 500-600 | Feed station likely. Top up bottles. Eat real food — flapjack, banana, whatever sits well. | | 2:00-3:00 | 60-80 | 500-600 | This is often where the weather deteriorates and appetite drops. Force-fuel. | | 3:00-4:00 | 60-80 | 500-600 | Caffeine gel before the final climbing section. Hot drink at feed station if cold. | | 4:00-5:00+ | 60-80 | 400-500 | Maintain intake through the final kilometres. Do not coast on fumes. |
Pre-race carb-loading: 8-10g per kg of body weight in the 24-36 hours before the event. Pasta, rice, potatoes, toast — volume eating, not precision. A substantial breakfast 3 hours before the start: porridge, toast, a banana, coffee.
Cold-weather fluid intake: Do not assume you need less water because it is cold. You still sweat under layers, and cold air is dry. 500-600ml per hour is the floor even in cold conditions. Electrolyte mix in every bottle.
Gearing
The Caledonia's gradients do not require extreme gearing. A standard compact crankset (50/34) with a 28-tooth or 32-tooth cassette handles everything on the course comfortably. The steepest ramps touch 10 per cent for short pitches — nothing that demands a 34x34 setup.
Use the gear ratio calculator to check your setup against the steepest sections. At 10 per cent gradient, a 75kg rider on a 34x28 needs roughly 250 watts at 70rpm. At 34x32, that drops to 220 watts at the same cadence. If your FTP is below 200 watts, the larger cassette is a sensible insurance policy. If it is above 250 watts, a 28-tooth is fine.
The one consideration is cold hands. Shifting accurately with numb fingers in the rain at kilometre 100 is harder than shifting on a warm training ride. Make sure your cables are fresh, your indexing is precise, and you have ridden the full cassette range in cold conditions at least once before race day. Electronic shifting removes this concern entirely — if you have it, this is the event where it earns its cost.
Weather Preparation
This is the critical section for the Etape Caledonia. The terrain is manageable. The distance is accessible. The weather is what separates a brilliant day from a miserable one.
What May in Scotland Actually Means
Mid-May in Highland Perthshire operates in a temperature band of roughly 5-18 degrees Celsius. The average is around 10-12 degrees at valley level, dropping 3-5 degrees on exposed moorland above 300m. Wind chill on the moorland sections at 30-35km/h riding speed in a 20km/h crosswind can push the feels-like temperature below freezing. That is not hypothetical. That is a realistic race-day scenario.
Rain probability in May in the Highlands is roughly 50 per cent on any given day. The rain is often persistent rather than a brief shower — two to three hours of steady drizzle is common. Combined with wind, persistent light rain is more dangerous than a heavy downpour because it soaks through kit slowly without triggering the alarm bells that a cloudburst does.
Sunshine, when it arrives, is spectacular. The Highland light in May is extraordinary, and a dry, clear Caledonia is one of the finest days on a bike in Britain. But you cannot bet on it, and betting on sunshine is how riders get hypothermia.
The Non-Negotiable Kit List
Carry all of this regardless of the forecast:
- Waterproof jacket: A proper waterproof, not a wind shell. Sealed seams, hood that fits under a helmet, long enough to cover the lower back in a riding position. Pack it in the jersey every time.
- Arm warmers: Start with them on. Remove only if the temperature is actually above 15 degrees and rising.
- Gilet: Windproof at minimum. Wear it for descents and exposed sections. Adds meaningful core warmth for almost no weight.
- Full-finger gloves: Cold hands destroy bike handling, brake control, and morale. If you normally ride in mitts, bring full-finger gloves for the Caledonia. If it is cold enough for full-finger gloves, it is cold enough for a second pair in a jersey pocket — wet gloves are worse than no gloves.
- Overshoes: Cold feet compound rapidly. Neoprene overshoes keep the worst of the rain and wind out. Even in moderate conditions, the windproof benefit alone is worth the 100 grams.
- Skull cap or buff: A thin skull cap under the helmet retains significant heat. Heat loss through the head accelerates when you are wet and riding at speed. Weighs nothing, changes the ride.
- Knee warmers: Optional in mild conditions, essential below 10 degrees. Cold knees become painful knees after three hours.
When to Add and Remove Layers
Start warmer than you think you need. The first 20 minutes of a sportive involve standing around, rolling slowly, and not generating much heat. You will warm up. You will not warm up as fast as you cool down. Starting slightly too warm and removing a layer at kilometre 20 is far better than starting cold and chasing warmth for the first hour.
Remove layers only when you are properly warm, not just comfortable. Highland temperatures drop quickly — a sheltered glen gives way to exposed moorland within minutes, and the layer you took off in the glen is the one you need on the moor.
Feed stations are the place to add layers, not the side of the road. Stopping in an exposed section to put on a jacket costs you warmth while you fumble with pockets and zips. Pull into a feed station, put the jacket on, eat, drink something hot, and ride out prepared.
Race Day Pacing
The First 30km: Controlled Start
The first section out of Pitlochry rolls through wooded hillside and along the loch. The road is good, the scenery is stunning, and the adrenaline of five thousand riders on closed roads is infectious. This is where pacing discipline matters most.
Ride the first 30km at 65-70 per cent of what feels sustainable. That will feel too easy. It is supposed to. The riders surging past you in the first hour are spending energy they will need at kilometre 100 on the exposed moorland. Let them go. You will see many of them again — sitting at a feed station, wrapped in a foil blanket, wondering where the day went wrong. Use the race predictor to set your target splits.
Schiehallion and Glen Lyon: Steady Effort
Ride Schiehallion at 80-85 per cent of FTP. Not harder. It is a 15-25 minute effort depending on your power, and riding it at threshold leaves you compromised for the 60-70km that follow. Sit, hold a sustainable cadence of 70-80rpm, and let the gradient pass. Through Glen Lyon, hold Zone 2 to low tempo on the undulations — conserve energy for the exposed section ahead.
The Moorland Section: Manage the Wind
This is where the race is won or lost. The exposed moorland between Glen Lyon and Kenmore offers no shelter. If the wind is up, the effort of riding at any given speed increases 15-25 per cent. The correct response is to ease the pace, sit in a group if one is available, and accept that this section will be slower than the sheltered kilometres that preceded it.
Do not fight a headwind solo. If you are riding alone into a 25km/h headwind on exposed moorland, ease back to 70 per cent of FTP and accept the slower speed. The riders who push 90 per cent into the wind for 20km arrive at the final section with nothing left. Drafting in a group of four or five riders saves 20-30 per cent of the effort — find wheels, contribute your turn at the front, and share the work.
The Final 20km: Run It Home
If you have paced the first 100km correctly, the final descent towards Pitlochry is enjoyable rather than desperate. Eat a gel or a bar at the last feed station. Top up the bottles. The descent is fast and the finish line is warm. The riders who struggle here are the ones who went too hard on Schiehallion, underestimated the moorland wind, and stopped eating at kilometre 80 because they felt sick. All three of those mistakes are avoidable with the pacing and nutrition strategy above.
Common Mistakes
Underdressing. The single most common mistake on the Caledonia. Riders check the forecast, see 12 degrees and partly cloudy, and leave the waterproof jacket behind. At kilometre 80 on the moorland in 8 degrees, 30km/h wind, and persistent drizzle, that 12-degree forecast is irrelevant. Dress for Scottish mountain weather, not the forecast.
Not eating in cold conditions. Appetite drops when core temperature drops. Riders who eat 80g of carbs per hour in training on a warm day suddenly eat 30g per hour in the cold because nothing sounds appetising. By the time hunger arrives, they are glycogen-depleted and the day is over. Force-fuel. Timer. Twenty minutes. Eat.
Going too hard on the early rolling terrain. The first 50km of the Caledonia are beautiful, the roads are closed, and the legs are fresh. Every short hill feels like an invitation. Riders surge up each one, ease off on the descent, surge again. The cumulative cost of surging twenty times in the first 50km is a catastrophic fade in the final 40km. Hold steady effort over the rollers. Let the speed vary. Keep the power constant.
Ignoring crosswinds. Riders who train on sheltered roads are unprepared for Highland moorland crosswinds. A 25km/h crosswind at 300m elevation on open ground is not a minor inconvenience — it is a significant physical and bike-handling challenge. Train in wind. Practise holding a line. Learn to ride in echelons.
Treating the event like a race. The Etape Caledonia is a sportive, not a race. The closed roads and the group dynamics can create a racing atmosphere, especially in the first hour. Resist it. Ride your own pace, eat on schedule, and enjoy the scenery. The fastest finishers at every sportive are the ones who ride their own plan, not the ones who chase every wheel that comes past.
The Shorter Routes
The Etape Caledonia offers 68km and 40km routes alongside the full 137km. These are genuine sportives in their own right — not consolation prizes. They share the same closed roads, the same Highland scenery, and the same event infrastructure.
The 68km route suits riders training 4-6 hours per week with a longest ride of 3 hours. A 6-week focused training block is sufficient. The weather preparation is identical — a 68km rider in the rain needs the same kit as a 137km rider.
The 40km route is accessible to most riders with a basic fitness level and is an excellent introduction to closed-road sportives. Even at 40km, carry the full weather kit — 40km in Highland rain without a waterproof is still a miserable experience.
Frequently Asked Questions
For event-specific preparation advice and plan reviews, the Not Done Yet community is where we work through this in detail with riders targeting specific events.
Can I ride the Caledonia on a gravel bike? Yes, and the Highland roads suit it. The road surfaces are generally good but some sections have loose gravel, rough patches, and cattle grids. A gravel bike with 32-35mm tyres is a perfectly sensible choice and adds comfort on the rougher sections. You will sacrifice some speed on the smooth descents. On the climbs and the rough sections, you gain comfort and confidence.
What if the weather is really bad? Ride it anyway. The event is well-organised with marshals, feed stations, and support vehicles across the route. Genuine weather problems — extreme wind, severe storms — would trigger an event cancellation, which has happened rarely. Persistent rain and cold are not cancellation weather; they are normal May-in-Scotland weather. Dress properly, eat consistently, and ride within your limits. A wet, cold Caledonia is memorable in ways a dry one is not.
Should I drive up the day before? Yes. Pitlochry is a 4-6 hour drive from most of England and the start is early. Arriving the evening before, eating well, sleeping in a hotel or B&B, and walking to the start relaxed is materially better than a 4am alarm and a long drive. Book accommodation early — Pitlochry fills up on Caledonia weekend.
How does the Caledonia compare to the Etape du Tour? They share the name but little else. The Etape du Tour is an Alpine event with major col climbs and significant elevation. The Caledonia is a Highland event with rolling terrain and weather as the primary challenge. The Etape du Tour demands climbing power. The Caledonia demands endurance, weather resilience, and pacing intelligence. Both are worth doing. They test different things.
