The Dartmoor Classic is 107 miles through some of the narrowest, steepest, most relentlessly undulating lanes in Britain. 2,400 metres of climbing. Not one massive col. Not one headline ascent that gets all the YouTube footage. Just dozens and dozens of short, savage Devon hills — lanes where 15% is normal, 18% is unremarkable, and the flat stretches between them barely exist.
Here is the thing nobody tells you about Dartmoor: the climbing total sounds moderate. 2,400 metres across 107 miles is less than a big Alpine day. But the way those metres are distributed is what makes the Dartmoor Classic one of the hardest days you will have on a bike in this country. Every climb arrives inside two or three minutes. Every descent drops you into the next valley just long enough to shift up before the road kicks again. There is no flat. There is no cruise. There is just constant gradient change for seven to eight hours.
If you have ridden flat centuries and think 107 miles is 107 miles, Dartmoor will correct that assumption with interest. If you have ridden hilly terrain and know what repeated short climbs do to the legs across a full day, this event rewards that preparation honestly. No gimmicks, no closed roads, no corporate fanfare. Just you, a bike, and 107 miles of beautiful, brutal Devon lanes through one of England's finest national parks.
Key Takeaways
- The Dartmoor Classic covers approximately 107 miles with 2,400m of climbing — the challenge is the relentless gradient of Devon lanes where 15-20% ramps are standard, not exceptional
- Target 2.8 W/kg for a comfortable finish, 3.2+ W/kg for a strong ride — the repeated short efforts demand more anaerobic repeatability than a steady Alpine sportive
- Dartmoor weather is a genuine variable — July can deliver sunshine, fog, driving rain, and exposed moorland wind in a single day
- A 12-week build with progressive long rides to 5 hours on the hilliest terrain you can find, plus specific short-climb repetition work
- The narrow Devon lanes mean descending skill matters — blind corners, cattle grids, loose gravel on the apexes
- Fuelling across 7-8 hours of constant undulation is harder than it sounds — practise eating under load
- The Dartmoor Classic is one of the UK's best preparations for European mountain sportives
Course Profile and Key Sections
The full Dartmoor Classic starts and finishes in Bovey Tracey on the eastern edge of the national park. A shorter route of approximately 70 miles exists for riders who want the Dartmoor experience without the full distance. Both routes use the same narrow Devon lanes, the same steep gradients, the same road surfaces. The shorter route simply avoids the western loop where the most remote and relentless climbing accumulates.
Let me break this down by section.
Opening 25 Miles: Bovey Tracey into the Moor
The route rolls out of Bovey Tracey on relatively forgiving roads. Relatively. You are still in Devon, so the lanes rise and fall from the gun, but the gradients are manageable and the legs are fresh. This is precisely where the Dartmoor Classic sets its trap. The early miles feel almost easy. Riders who trained on flat terrain think the day is going to be straightforward.
It is not. The early section introduces the pattern — climb for two minutes, descend for ninety seconds, climb again — that defines the entire day. Road surface is mixed: decent tarmac on the main lanes, rougher patches on single-track sections where hedgerows crowd the road.
Haytor and the Moorland Climbs (Miles 25-45)
Here is where it gets really interesting. The route climbs onto Dartmoor proper and the character shifts. Haytor Vale is the iconic ascent — roughly 2km at 8-10% with ramps touching 15%, the granite tor visible from miles around as both landmark and warning. The climb itself is not the hardest on the course, but it arrives on exposed moorland where the wind can add two or three minutes to the effort.
The moorland sections above Haytor are bleak and exposed. July on Dartmoor can be 20 degrees in the valleys and 12 degrees on the tops with a crosswind that makes you question your life choices. The road surface up here is rougher — cracks, potholes, standing water after rain. The descents off the moor are fast but narrow, with high hedgerows blocking sightlines and gravel washed into the apexes from farm tracks.
This section teaches you the rhythm of the day. Short climb, brief descent, short climb, brief descent. The legs never fully recover. The heart rate never fully settles. The pattern is relentless.
The Widecombe Section (Miles 45-65)
Widecombe-in-the-Moor sits in one of Devon's deepest valleys. Getting into it means a steep, technical descent on narrow lanes. Getting out of it means one of the nastiest kicks on the course — a short, sharp climb out of the valley floor at gradients that remind you this is not a flat sportive.
The roads around Widecombe are quintessential Devon: single-track, high-hedged, steep in both directions, with passing places that double as recovery spots if you are willing to pull over. The climbing here stacks rapidly. Three or four short ascents inside ten miles, each one between 12% and 18%, each one lasting just long enough to flood the legs before the next one arrives.
This is the heart of the course. If you can ride the Widecombe section at a controlled pace without surging on every kick, you are riding the Dartmoor Classic well.
The Western Loop (Miles 65-85)
The most remote section. The western loop pushes through some of Devon's quietest lanes — beautiful, empty, and unforgiving. The climbs here are not named. They are simply Devon lanes doing what Devon lanes do: rising at 12-15% for a minute or two, dropping into a valley, and rising again.
By mile 70, the cumulative climbing is doing its work. The road surface is variable — farm tracks cross the route, gravel appears on corners, the tarmac is patchy. Traffic is minimal but tractors and livestock are real possibilities.
The western loop is where the Dartmoor Classic separates riders who trained for repeated short climbs from riders who trained on flat terrain. The individual climbs are not hard. The fiftieth repetition of a short, steep effort on tired legs is very hard indeed.
Final 30 Miles: When the Legs Are Talking
The good news is that you are heading back towards Bovey Tracey. The bad news is that Devon does not do flat homeward stretches. Several sharp climbs remain, and they arrive on legs that have already climbed 1,800-2,000 metres. A gradient that felt trivial at mile 20 feels entirely different at mile 90.
Riders who went too hard on the early climbs, or who under-fuelled through the middle section, discover the debt here. This is where the 12-week preparation pays off or does not.
Fitness Benchmarks
| Metric | Strong Finish | Comfortable Finish | Completion | |--------|--------------|-------------------|------------| | FTP (W/kg) | 3.2+ | 2.8-3.1 | 2.4-2.7 | | Longest training ride | 6+ hours hilly | 5 hours hilly | 4 hours hilly | | Weekly climbing | 1,500m+ | 1,000m+ | 600m+ | | Finish time estimate | 6-7 hours | 7-8.5 hours | 8.5-10 hours | | Weekly training hours | 10-12 | 8-10 | 6-8 |
Use the FTP zone calculator to set your training zones and the climb time calculator to estimate your pace on the key ascents.
The numbers that matter most for Dartmoor are not raw FTP but repeatability. A rider at 3.0 W/kg who can repeat 2-3 minute efforts at 90-100% FTP fifty times across a day will ride the Dartmoor Classic better than a rider at 3.4 W/kg whose power drops 15% after the thirtieth effort. Train the repeatability.
12-Week Training Plan Overview
Phase 1: Endurance Base (Weeks 1-3) — 7-9 hrs/wk
The aerobic foundation. Four to five rides per week, 80% in Zone 2. The anchor session is a long ride building from 2.5 hours in week 1 to 3.5 hours in week 3, on the hilliest terrain available. If you live somewhere flat, use a turbo trainer with gradient simulation or find the nearest repeatable hill and ride it multiple times inside the long ride.
One mid-week session of 60-90 minutes at moderate intensity with 4-6 short hill efforts of 2 minutes at 85% FTP. This introduces the climbing-repetition pattern that the Dartmoor demands. Not hard yet. Just the pattern.
Core stability work twice per week: planks, dead bugs, side planks, single-leg glute bridges, hip mobility. Twenty minutes each session. Devon descents on tired legs demand a stable torso. This is not optional.
Phase 2: Climbing Repeatability (Weeks 4-7) — 9-11 hrs/wk
This is precisely what makes or breaks your Dartmoor Classic. The volume increases, but the specific work begins.
Key session 1: Short hill repetitions. Find a hill at 8-12% that takes 2-4 minutes to climb. Ride it 8-12 times at 90-100% FTP with a descent recovery between each. Start with 8 reps in week 4 and build to 12 reps by week 7. This session trains the exact muscular demand of Devon lanes — short, steep, repeated.
Key session 2: Sustained tempo on rolling terrain. 90 minutes to 2 hours on the hilliest route you have. Ride at 75-85% FTP throughout, resisting the urge to surge on the climbs or coast on the descents. Constant effort. This trains pacing discipline for the Dartmoor.
Long ride: Building from 3.5 hours to 5 hours over the four weeks, always on hilly terrain with a minimum of 800m climbing by week 7. Practise fuelling on these rides — eating and drinking on short climbs and descents, not just on flat sections.
Core stability continues twice per week. Add hip flexor stretching and single-leg balance work as the climbing volume increases.
Phase 3: Event-Specific (Weeks 8-10) — 10-12 hrs/wk
Peak volume and peak specificity.
Key session 1: Extended hill repetitions. Same 8-12% gradient hill, but now 10-15 reps of 3-4 minutes at 90-95% FTP. By week 10 this session should feel hard but manageable — if it feels desperate, the volume is too high.
Key session 2: Race-pace simulation. A 3-hour ride on rolling terrain at your target Dartmoor pace. Include 6-8 short climbs at race-day effort. Full fuelling rehearsal.
Long ride: 5-6 hours with 1,200-1,500m of climbing. If you can travel to Devon or similarly hilly terrain, do it. One ride on truly steep, narrow lanes teaches more about bike handling and pacing than five rides on a smooth hill.
If you can manage one back-to-back weekend — a 5-hour Saturday followed by a 2.5-hour easy Sunday — the Sunday teaches your legs what mile 90 feels like.
Phase 4: Taper (Weeks 11-12)
Volume drops 40-50%. The fitness is in. The work now is rest, sharpening, and logistics.
Week 11: Two quality sessions — short hill repetitions (6 reps, sharp and controlled) and a 90-minute rolling ride at race pace. Total volume 6-7 hours. One core session.
Week 12: Two easy spins of 60-75 minutes with 2-3 short openers at 95% FTP. Total volume 3-4 hours. Travel to Devon early if possible. Pre-ride 20 miles of the course to feel the gradient character and road surface. Eat well, sleep well, lay out kit.
Key Sessions
The Devon Hills Session. 15-minute warm-up. Then 10x3 minutes at 90-95% FTP on a gradient of 8-12%, descending between each rep. The gradient matters — flat intervals do not prepare the legs for what Devon does. If you only have a turbo, set the gradient to 10% and ride seated. Once per week from week 4 onwards.
Rolling Tempo. 2 hours on the hilliest route available. Hold 75-85% FTP across the entire ride, including the climbs and the descents. No surging. No coasting. If your power spikes 30% on every rise and drops to nothing on every descent, you are doing what most people do, not what actually works.
The Long Hilly Ride. 4-6 hours on terrain with at least 800m of climbing. Ride the first three hours comfortable. Ride the final 1-2 hours including four short climbs at your target Dartmoor effort. Eat 60-80g of carbohydrate per hour throughout.
Nutrition Strategy
Fuelling the Dartmoor Classic is harder than fuelling a flat century. The constant climbing and descending means your gut never gets a comfortable, steady-state window for digestion. You are either pushing on a gradient or braking into a valley.
The target is 60-80g of carbohydrate per hour for the full 7-8 hours. Use the fuel planner to map this out before race day. A 2:1 glucose-fructose mix — backed by Asker Jeukendrup's research — maximises absorption. The specific product matters less than the total intake and the practice.
Practise eating on climbs. Devon lanes do not give you flat recovery sections. If you can only eat on flat ground, you will under-fuel the Dartmoor Classic. Train yourself to open a gel, chew a bar, or take a drink while climbing at 10-12%. It is awkward at first. It becomes automatic with practice.
Hydration. 500-750ml per hour depending on conditions. July in Devon can be warm enough to need 750ml or cool enough that 500ml covers it. Electrolytes in every bottle. The hydration calculator gives you a personalised starting number.
Pre-event. 8-10g of carbohydrate per kilogram of body weight in the 24 hours before the ride. Breakfast 2-3 hours before the start: porridge with banana and honey, or toast with jam, or whatever your gut tolerates at five in the morning.
The caffeine play. A caffeine gel at mile 60-70 sharpens the focus for the final third. If you use caffeine, rehearse it in training. If you do not use it regularly, the Dartmoor Classic is not the day to experiment.
Equipment and Gear
Gearing. Compact chainset (50/34) with an 11-32 cassette is the minimum. An 11-34 is better. Devon lanes at 15-18% after 80 miles will humble any gear that felt adequate in training. Many experienced Devon riders run a sub-compact (48/31 or 46/30). Test your gearing on a steep local climb at the end of a long ride — not fresh.
Tyres. 28mm minimum. Devon road surfaces are mixed — good tarmac on some sections, rougher patches with loose gravel and potholes on others. Wider tyres absorb the rough surfaces and provide better grip on descents. Tubeless with sealant is ideal for puncture resilience.
Wet weather gear. A packable gilet and arm warmers from the start. If rain is forecast, a packable waterproof is non-negotiable — wet descents on narrow Devon lanes at 50kph on tired hands and tired brakes can cause genuine hypothermia.
Bike. Disc brakes are a genuine advantage on Devon descents, especially in the wet. Dozens of short, technical descents mean dozens of braking efforts across the day.
Repair kit. Two inner tubes or plug kit, CO2, tyre levers, multi-tool, chain quick link. Devon lanes are remote. Carry what you need to fix what breaks.
Race Day Pacing
The single most important sentence in this guide: do not attack Devon hills.
What most people do is surge on the first ten climbs because the legs are fresh and the gradient provokes a response. What actually works is riding every climb at a sustainable, repeatable effort from mile 1 to mile 107.
First third (miles 1-35). Ride 5-10% below your target effort. The legs feel too good. The climbs feel too easy. That is the point. You are banking energy for miles 70-107 when every climb costs more than it should.
Middle third (miles 35-70). Settle into your target effort. Eat consistently. Drink consistently. The Widecombe section will test your pacing — short, steep kicks that provoke surges. Resist. Sit. Hold your effort. Let the gradient push you, not the other way around.
Final third (miles 70-107). Ride what you have. If you paced the first two thirds well and fuelled consistently, the final third is hard but controlled. If you attacked the early climbs and skipped feeds, the final third is survival.
On the descents: brake early, sit upright, respect the narrow lanes. Cattle grids, loose gravel, blind corners behind hedgerows — the risks multiply on tired legs.
Common Mistakes
1. Attacking the early climbs. The first Dartmoor climb feels easy. The second feels easy. The third feels easy. The thirtieth does not. Riders who surge on every early gradient arrive at mile 70 with a deficit that no amount of gels can fix. Ride within yourself from the gun.
2. Wrong gears. A 34x28 bottom gear is not enough for Devon lanes after 80 miles. This is the most fixable mistake on this list — fit a bigger cassette or a sub-compact chainring before race day. Test it on a steep climb when tired.
3. No wet weather gear. Dartmoor in July can be glorious sunshine or driving rain on exposed moorland. Riders who leave the gilet and arm warmers at home because the morning is warm discover that moorland weather has its own opinion. Carry layers. Always.
4. Underestimating the descents. Devon descents are narrow, technical, and often loose. High hedgerows block the view around corners. Cattle grids appear mid-descent. Gravel sits on the apexes from farm traffic. Ride the descents with respect, especially in the second half when tired legs and tired hands reduce your margin.
5. Eating only on flat sections. There are almost no flat sections. If your fuelling plan requires flat road and a steady pace, you will eat half of what you need. Train yourself to eat on climbs and descents. Your gut adapts with practice.
Travel and Logistics
Getting there. Bovey Tracey sits on the eastern edge of Dartmoor, just off the A38 between Exeter and Plymouth. From London, allow 3.5-4 hours via the M5. From Bristol, 2 hours. From Birmingham, 3 hours. The nearest train station is Newton Abbot, 15 minutes by car.
Accommodation. Bovey Tracey itself has limited options — book early. Exeter (30 minutes) offers the widest range. Newton Abbot (15 minutes) and Ashburton (10 minutes) are closer alternatives. If you can stay in Bovey Tracey itself, the shortened morning logistics are worth it for a dawn start.
Warm-up rides. If you arrive a day early, ride 15-20 miles of local Devon lanes. Not the course — just local roads. The purpose is to feel the gradient character and the narrow-lane handling before race day. Devon lanes ride differently from most UK roads.
Entry. Approximately £40-55. The shorter route is the same entry fee and is a sensible option for a first Dartmoor experience. Enter early — places fill.
Parking. Provided at the event venue in Bovey Tracey. Arrive early. The car park fills.
Recovery Plan
The Dartmoor Classic puts 7-8 hours of accumulated climbing stress through your legs. Recovery matters.
Day 1 (race day evening). Protein and carbohydrate within 30 minutes of finishing. Stretch gently. Hydrate. Sleep.
Days 2-3. Complete rest or a 30-minute easy spin. No climbing. No intensity. Expect the legs to feel worse on day 2 than day 1 — delayed onset soreness from repeated eccentric loading on the descents.
Days 4-5. Easy riding, 45-60 minutes, flat terrain, Zone 1-2. Blood flow, not fitness.
Days 6-7. Normal easy riding resumes. Full training resumes in week 2. The repeated short climbs create a specific fatigue pattern that needs 7-10 days to clear fully.
The Dartmoor Classic as European Preparation
Here is where it gets really interesting for riders with bigger goals. The Dartmoor Classic trains precisely the quality that European mountain sportives demand but that most UK training does not develop: climbing repeatability.
An Etape du Tour or a Marmotte features longer climbs — 30-90 minutes of sustained effort. The Dartmoor features shorter climbs repeated fifty times. The muscular demand is different, but the cumulative fatigue is remarkably similar. Riders who finish the Dartmoor Classic well have built the aerobic base and the muscular resilience that translates directly to European mountain sportives.
If you are planning an Alpine event later in the season, the Dartmoor Classic is one of the best race-day rehearsals available in the UK. The duration, the accumulated climbing, and the fuelling demand all match. The only thing that differs is the individual climb length — and that is easier to train specifically than the repeatable endurance the Dartmoor builds.
The Dragon Ride offers longer sustained climbs. The Fred Whitton offers steeper, more extreme gradients. The Dartmoor Classic sits between the two: relentless, honest, and precisely the kind of hard that makes you a stronger rider for whatever comes next.
107 miles. 2,400 metres. Fifty climbs. No gimmicks. The Dartmoor Classic is Devon's answer to the question of what a proper British sportive looks like. Train the repeatability, respect the weather, pack the right gears, and ride it within yourself. The rest is just beautiful, brutal Devon lanes.
If you want structured help building the 12-week plan around your starting fitness, the Not Done Yet community has free plan templates, pacing discussions, and riders who have done this event — plus direct coaching access if you want the plan built for you.