SPORTFUL DOLOMITI RACE TRAINING GUIDE: 200KM AND 5,000M THROUGH ITALY'S TOUGHEST GRAN FONDO

There is a moment on the Manghen — somewhere around kilometre twelve of eighteen, deep into the final 8km where the gradient rarely drops below 10 percent — when the road bends left and the trees disappear. Below you, the valley floor is an abstraction. Ahead, the road tilts upward into exposed alpine meadow with no shade, no cover, and no negotiation with the gradient. Your legs have already climbed Croce d'Aune, ridden over Passo Rolle, and descended into the valley. You have 120 kilometres and roughly 3,000 metres of vertical gain behind you. And the hardest section of the hardest climb on the route is still in front of you.

The Sportful Dolomiti Race — the Gran Fondo Sportful — does not disguise what it is. 200 kilometres. Approximately 5,000 metres of climbing. Four major Dolomite passes, starting and finishing in Feltre. It sits alongside the Ötztaler, La Marmotte, and the Gavia-Mortirolo as one of the legitimately brutal single-day events in European cycling. The difference is the Manghen. Where other events distribute their difficulty, the Sportful loads it onto one climb, places it three-quarters of the way through the race, and then sends you over the Brocon when you thought the hard part was finished.

This is the training framework we use with riders inside Not Done Yet who are targeting the Sportful. It is built for experienced cyclists who already have a solid endurance base and want a structured 16-week plan that addresses the specific demands of 200km, 5,000m, and the Manghen problem.

Key Takeaways

• The Sportful Dolomiti Race covers approximately 200km with 5,000m of climbing across four major passes — placing it firmly in the elite tier of European gran fondos alongside the Ötztaler and Marmotte
• Passo Manghen is the defining climb — 18km at 7.5 percent average with sustained ramps above 10 percent, arriving after 120km of racing and 3,000m of climbing already in the legs
• Target 3.3 W/kg minimum for completion, 3.8+ W/kg for a strong ride — the combination of distance, climbing, and altitude demands genuine all-round mountain fitness
• A 16-week build peaking at 12-14 hours per week with long rides to 6-7 hours and specific climbing blocks targeting sustained efforts of 60-90 minutes is the minimum preparation
• The valley-to-summit temperature swing can exceed 20 degrees — layering strategy and the ability to manage kit transitions at altitude are practical skills that need practising
• Passo Rolle provides 20km of steady climbing early in the race — riders who overcook this ascent pay for it on the Manghen, which is the most unforgiving climb on the route
• The event starts in Feltre, a small town in the Veneto foothills — accommodation books quickly once entries open, so secure lodging and enter the event simultaneously

Course Profile and Key Climbs

The route leaves Feltre heading north and west into the Dolomites. Four major passes. Four descents. Long valley transfers between them. The first 60 kilometres are the gentlest the day will offer, and even those include the Croce d'Aune. Let me break this down climb by climb.

Croce d'Aune (1,015m) — The Opener

The Croce d'Aune is the historic climb — the one Marco Pantani grew up riding as a junior in Cesenatico, the one that opens the Sportful every year. Approximately 10 kilometres at an average of 6 percent. The road surface is generally good, the gradient is steady, and the climb sits in the first 30 kilometres of the race when the legs are fresh and the field is still bunched.

Here is the thing nobody tells you about the Croce d'Aune: it is not the climb that matters. It is the climb that reveals how you will ride the other three. The gradient is honest but never vicious. The temptation is to ride it at tempo because you feel good and the peloton is moving fast. Riders who do this — pushing 85-90 percent of FTP on the opener — are spending matches they need on the Manghen five hours later. Treat the Croce d'Aune as a warm-up with altitude. High Zone 2. Conversational. Save everything.

Passo Rolle (1,984m) — The Long One

Passo Rolle is the first properly big ascent of the day. Approximately 20 kilometres of climbing at a steady 5-6 percent average. The road is wide, well-surfaced, and passes through forest for much of the lower slopes before opening up near the summit at just under 2,000 metres.

The Rolle is deceptive. Five to six percent does not look intimidating on paper. But 20 kilometres of it, arriving after the Croce d'Aune and roughly 80 kilometres of racing, is a different proposition. The steady gradient means riders default to a rhythm that is subtly too high — not threshold, not tempo, just a few watts above sustainable. Over 20 kilometres, those extra watts compound. By the summit your legs carry a fatigue debt that will collect interest on the Manghen.

Pace the Rolle on power, not feel. 75-80 percent of FTP. Let groups ride away. The summit is not the finish line.

Passo Manghen (2,047m) — The Beast

This is precisely what separates the Sportful from every other Italian gran fondo. The Manghen is 18 kilometres at 7.5 percent average. The first 10 kilometres are steep but manageable — 6-7 percent through switchbacks in the forest, with shade and rhythm possible. Then the road emerges above the treeline and the final 8 kilometres begin.

Those final 8 kilometres average above 9 percent with consistent ramps of 10-12 percent. There is no shade. In June, with direct sun, the temperature on these exposed slopes can sit above 30 degrees even as the summit at 2,047 metres is cooler. The road surface deteriorates in places. There are no villages, no cafes, no spectators — just the road and the gradient.

The Manghen arrives at approximately kilometre 120 of the race. Your legs carry the Croce d'Aune, the Rolle, and two descents. Roughly 3,000 metres of climbing already absorbed. Your glycogen stores are materially depleted. And the gradient is asking for more sustained power than anything you have produced all day. This is where the event is decided. Riders who have paced the first 120 kilometres correctly, fuelled aggressively, and trained specifically for 60-90 minute sustained climbing efforts will ride the Manghen hard but controlled. Riders who have not will stop. Repeatedly.

Use the climb time calculator to model your Manghen ascent time at your current W/kg. If the number shocks you, good — better to know now than at kilometre 12 of 18.

Passo Brocon (1,615m) — Tired Legs Territory

The Brocon is the climb nobody talks about and everybody remembers. Approximately 13 kilometres at 6 percent average. It arrives at roughly kilometre 160 of the race, after the Manghen descent and a valley transfer. The gradient is less severe than the Manghen. The problem is the context.

At this point you have been riding for 7-9 hours. You have climbed over 4,000 metres. The Manghen has emptied whatever reserves you held back. And the Brocon rises 13 kilometres at a gradient that is just steep enough to prevent you from soft-pedalling through it. Six percent after 160 kilometres feels like 8 percent on fresh legs. The riders who manage the Brocon are the riders who ate and drank on the Manghen descent, who recovered in the valley, and who have one more sustained effort in them because they did not leave everything on the earlier climbs.

Fitness Benchmarks

Your power-to-weight ratio is the best single predictor of your Sportful finishing time. These benchmarks assume proper pacing and fuelling across the full 200 kilometres.

| Capacity | FTP (W/kg) | 5-Min Power (W/kg) | Longest Training Ride | Weekly Volume | |----------|-----------|--------------------|-----------------------|---------------| | Strong Finish | 3.8+ | 5.0+ | 7 hours with 2,500m+ | 12-14 hours | | Comfortable Finish | 3.3-3.7 | 4.5-4.9 | 6 hours with 2,000m+ | 10-12 hours | | Completion | 2.8-3.2 | 4.0-4.4 | 5.5 hours with 1,500m+ | 8-10 hours |

Two things matter beyond the numbers. First, these are sustained climbing watts — your actual output on the Manghen after five hours of racing will be 85-90 percent of your rested FTP test number. Plan for that. Second, the 5-minute power column matters because the Manghen's steep ramps demand above-threshold bursts interspersed with sustained climbing. Riders with a high FTP but poor 5-minute capacity stall on every steep pitch.

The Race Predictor will translate your W/kg into an estimated finishing time. The Climbing Time Estimator will show you projected ascent times for each pass individually.

16-Week Training Plan Overview

The plan assumes you are already riding 7-9 hours per week with regular rides of 3 hours or more. If your base is weaker, add 4-6 weeks of Zone 2 riding before starting.

Phase 1: Aerobic Base (Weeks 1-4)

Volume: 8-10 hours per week. Four to five rides. Eighty percent in Zone 2.

The goal is aerobic foundation and saddle time. Stephen Seiler's polarised research underpins this: easy stays properly easy. The riders who rush through base arrive at the Manghen with a shallow aerobic engine and no reserves below threshold.

Weekly structure:

• 3-4 Zone 2 rides (60-90 minutes midweek, building long ride on weekends)
• 1 quality session: sweet spot intervals, 2x20 minutes at 88-93 percent FTP
• 1 long ride building from 3 hours to 4.5 hours with 800-1,200m of climbing
• 2 core stability sessions: planks (front and side), dead bugs, single-leg glute bridges, hip mobility drills — the posterior chain work that supports climbing posture across an 8-hour day

Key metric: By the end of week 4, your long ride should reach 4.5 hours with sustained climbing at conversational pace. If that ride leaves you wrecked for two days, the base needs extending.

Phase 2: Climbing Volume (Weeks 5-8)

Volume: 10-12 hours per week. The Manghen-specific work begins.

Two quality sessions per week. Long rides building toward 5-6 hours with serious vertical gain. At least one weekend where you stack back-to-back climbing days — Saturday 5 hours with 1,500m, Sunday 3.5 hours with 1,000m. This teaches the body to recover overnight and produce power on tired legs, which is the exact demand of kilometre 160.

Weekly structure:

• 2 quality sessions (detailed below)
• 2-3 Zone 2 rides
• 1 long ride building to 5-6 hours with 1,500-2,000m of climbing
• 1 core stability session (maintain, not build)

Quality session 1 — threshold climbing: 3x15 minutes at 92-97 percent FTP on a real gradient or ERG-simulated climb. Progress to 2x20 minutes by week 8. Recover 5-7 minutes between intervals. This is the session that builds the sustained power for the Manghen and the Rolle.

Quality session 2 — VO2max intervals: 5x4 minutes at 106-115 percent FTP with 4 minutes recovery. The VO2max work raises the aerobic ceiling and makes threshold efforts feel more sustainable on the steep ramps.

Phase 3: Event-Specific (Weeks 9-12)

Volume: 12-14 hours per week at peak. This is where the training starts to resemble the event.

Weekly structure:

• 2 quality sessions
• 2-3 Zone 2 rides
• 1 long ride reaching 6-7 hours with 2,000-2,500m of climbing
• 1 over-under session: 4x(4 minutes at 105 percent FTP, 4 minutes at 85 percent FTP) — simulating the Manghen's variable gradient

The critical session: By week 11, you need one ride of 6-7 hours with over 2,000 metres of climbing. This is your closest single-day simulation of the Sportful's first 160 kilometres. The fuel planner should be fully integrated into these long rides — practise 60-90g carbs per hour under race-like conditions. Riders who skip this ride arrive at the Sportful guessing about how hours six through nine will feel. The guess is almost always wrong.

Stacked weekends: Two weekends in this phase should feature Saturday-Sunday climbing doubles. Saturday: 5-6 hours with 1,800m or more. Sunday: 3-4 hours with 1,000m or more. The second day's effort on tired legs mirrors the Brocon's position in the race.

Phase 4: Taper (Weeks 13-16)

Weeks 13-14: Volume holds at 10-12 hours. One final stacked weekend, ideally on terrain with sustained 30-40 minute climbs. Threshold work reduces to maintenance — 2x12 minutes at FTP.

Weeks 15-16: Volume drops 30-40 percent in week 15, 50 percent in week 16. Keep short sharp efforts — 3x5 minutes at threshold, 4x90 seconds at VO2max — to keep the legs responsive without adding fatigue. Do not train hard in the final five days. A well-executed taper is worth 5-10 watts on race day.

Key Sessions

Three sessions do the heaviest lifting across the 16-week block. Every other ride supports these.

Sustained climbing repetitions. 3x15 minutes progressing to 2x25 minutes at 88-95 percent FTP on gradient. These replicate the Manghen's demand for 60-90 minutes of continuous climbing power. On a turbo, set the gradient to 7-8 percent. On real roads, find a 20-30 minute climb and ride it at target watts. Recovery between intervals is the descent.

The long ride with climbing density. Your longest ride should reach 6-7 hours with 2,000-2,500 metres of vertical gain. Pack the climbing into the second half where possible — this simulates the Manghen and Brocon arriving on fatigued legs. Practise your full nutrition strategy. Practise your layering. Practise riding at 75-80 percent FTP when your legs are telling you to stop.

Over-under climbing intervals. 4x(4 minutes at 105 percent FTP / 4 minutes at 85 percent FTP) on gradient. The Manghen does not hold a consistent gradient. It punches above 10 percent then eases to 6, then punches again. Your body needs to practise clearing lactate while still climbing. This session teaches exactly that.

Nutrition Strategy

The Sportful is an 8-12 hour day for most amateur riders. A 75kg cyclist finishing in 9 hours burns roughly 5,500-7,000 kcal. You cannot carry that much food and you cannot absorb it all. What you can do is close the gap enough that your glycogen stores and fat oxidation handle the rest.

Target: 60-90g of carbohydrate per hour from kilometre one. Not from when hunger arrives. Not from the first climb. From the start. The fuel planner will calculate exact quantities against your projected ride time and weight.

The first two hours matter most. Gut function is at its best when you feel your best. By hour six, your ability to absorb carbohydrate declines. Riders who eat aggressively in the opening hours are still eating comfortably at hour eight. Riders who skip early fuelling because the legs feel good are the riders staring at gels they cannot stomach on the Manghen.

Pre-race loading. 8-10g of carbohydrate per kilogram of bodyweight the day before. Breakfast 3-4 hours before the start: 2-3g per kilogram of carbs, moderate protein, low fibre, low fat. Pasta in Feltre the night before is tradition and good science.

Altitude nutrition. At 2,000 metres on the Manghen summit, appetite suppression is real. Eat before you start the climb, not during the steep section when your breathing rate makes chewing difficult. Pocket two gels and a bottle of high-concentration drink mix for the Manghen. Force fluids down on every gradient easing.

Hourly plan:

| Hour | What to Eat | Notes | |------|-------------|-------| | 1-2 | Drink mix (40-50g/hr) plus 1 gel or bar per hour | Easy to absorb, save solid food for later | | 3-4 | Drink mix plus real food (rice cakes, banana, energy bar) | Flavour variety prevents nausea | | 5-6 | Mix of gels and solids, whatever stays down | Gut tolerance drops — eat what works | | 7-8 | Gels and liquid carbs, small frequent amounts | Solid food may not sit well this deep | | 9+ | Gels, cola, anything with sugar | Survival fuelling — just keep eating |

Hydration. 500-750ml per hour in normal conditions, up to 1,000ml in the valley heat. Sodium intake of 500-1,000mg per litre. The hydration calculator will help you dial quantities against bodyweight and expected conditions.

Train your gut to handle this volume. At least four long training rides in Phases 2 and 3 should include the full 60-90g per hour protocol. The Manghen at kilometre 120 is not the place to discover your chosen gel brand causes stomach distress at altitude.

Equipment and Gear

Gearing

This is not optional and it is not cosmetic. A compact chainset (50/34) with an 11-34 cassette is the absolute minimum. A sub-compact (46/30) with an 11-36 is better. The Manghen has sustained ramps above 10 percent that arrive after five hours of riding. At that point, the difference between a 34x32 and a 30x36 is the difference between grinding at 50 RPM with rising heart rate and spinning at 70 RPM within an aerobic window.

Fit the easiest gearing your frame and derailleur can handle. Ride it for at least six weeks before the event. The pedalling rhythm at low cadence needs to be natural, not novel.

Tyres

25mm minimum, 28mm if your frame clears them. The Manghen's road surface has rough sections on the upper slopes. Lower pressures — 70-75 PSI for a 75kg rider on 28mm tyres — improve comfort and grip on the descents. Carry a spare tube and a CO2 canister. The Manghen is remote. A puncture at kilometre 14 of 18 with no support vehicle in sight is a problem you solve yourself or not at all.

Layering

Here is where it gets really interesting from a practical standpoint. The valleys around Feltre and in the Valsugana can exceed 30 degrees Celsius in June. The Manghen summit at 2,047 metres can be 10-15 degrees. The Rolle summit sits at similar temperatures. That is a 15-20 degree swing across the course of the day.

Start in shorts and jersey. Arm warmers in a pocket. Lightweight gilet in a pocket. Put the arm warmers on before the Rolle summit. Add the gilet at the top. Strip both for the valley section before the Manghen. Arm warmers back on for the Manghen descent. Gilet for the Brocon summit. The ability to manage these transitions smoothly, at altitude, while fatigued, is a practical skill. Practise it on training rides.

Spares

Two tubes, tyre levers, a CO2 inflator with two cartridges, a multi-tool, and a phone with charge. The Manghen is remote enough that mechanical support is sparse. The Brocon likewise. Self-sufficiency is not a choice on this course — it is a requirement.

Race Day Pacing

Pacing the Sportful is a four-act problem. Each climb has a role. The effort distribution across them determines whether you ride the Brocon or walk sections of it.

Act 1: Feltre to Croce d'Aune Summit (km 0-30)

Target: 70-75 percent FTP on the climb. The start in Feltre is fast and flat. Sit in the field. Conserve. When the Croce d'Aune begins, settle into high Zone 2 immediately. The gradient is honest at 6 percent. Resist the urge to ride with the faster groups. Your target heart rate should feel boring. That is correct. The feed zone at the summit is your first refuelling point — use it.

Act 2: Passo Rolle (km 55-80)

Target: 75-80 percent FTP. The Rolle is 20 kilometres and it is steady. This is the climb that sets the tone for the rest of the day. Ride on power, not feel. Groups will ride away from you on the lower slopes. Let them. Many of those riders will be standing at the side of the road on the Manghen three hours later. Your cadence should sit at 75-85 RPM. Eat every 20 minutes. Drink every 15. The Rolle summit is approaching 2,000 metres — have arm warmers ready for the descent.

Act 3: Passo Manghen (km 100-130)

Target: 80-85 percent FTP for the first 10km, then ride the gradient. The Manghen is where the pacing plan either holds or it does not. The first 10 kilometres through the forest are manageable at 6-7 percent. Hold your wattage ceiling. Eat at the base. Eat at kilometre 5. Eat at kilometre 10 if you can.

Above the treeline, the gradient dictates the effort. The 10-12 percent ramps will push you above threshold regardless of intention. The good news is that they do not last forever — each steep pitch is followed by a brief easing. Use those easings. Drop two gears, lower the heart rate, take a drink. The riders who try to maintain a constant speed through the variable gradient blow up. The riders who ride the gradient — hard on the steep bits, recovering on the easings — survive.

A caffeine gel at kilometre 12 is not a bad idea. The summit is at kilometre 18. Six kilometres of climbing at above 9 percent after everything that came before. The view from the top, if you look up, is spectacular. Most riders do not look up.

Act 4: Passo Brocon and Home (km 150-200)

Target: 70-75 percent FTP on the Brocon, then ride home. Eat aggressively on the Manghen descent and through the valley. Refill bottles at every opportunity. The Brocon at 13 kilometres and 6 percent is one more effort on empty legs. Ride it conservatively. There is no prize for the fastest Brocon ascent. The descent into Feltre is your victory lap — enjoy it.

Common Mistakes

1. Racing the Rolle. Twenty kilometres of steady 5-6 percent feels like an invitation to ride tempo. It is not. The Rolle is the place where disciplined riders bank time for the Manghen by not spending energy. Every watt over 80 percent of FTP on the Rolle is a watt you will miss at kilometre 130.

2. Under-fuelling in the first three hours. The legs feel good. The weather is warm. Eating feels unnecessary. By hour five, the glycogen deficit catches you and there is no fixing it on the Manghen. Eat from kilometre one. Sixty grams of carbohydrate per hour minimum, building to 90 as the day progresses.

3. Wrong gearing. An 11-28 cassette on the Sportful is an equipment failure waiting to happen. The Manghen's sustained 10-12 percent ramps after five hours of riding demand easy gears. An 11-34 is the floor. An 11-36 with a sub-compact is sensible.

4. Ignoring the temperature swing. Leaving Feltre in 28-degree heat wearing only a jersey and shorts is fine. Arriving at the Manghen summit at 12 degrees without arm warmers is not. Carry a gilet and arm warmers. Always. The 60-second delay of putting them on is nothing compared to the 20-minute loss from shivering down a descent.

5. Skipping the long training rides. There is no shortcut to 200-kilometre fitness. Riders who peak at 4.5-hour training rides and believe their fitness will carry them through a 9-hour race are making a mistake that becomes apparent on the Brocon, when the body encounters a duration it has never experienced and the legs simply stop cooperating.

Travel and Logistics

Getting to Feltre. The nearest major airports are Venice Marco Polo (90 minutes by car) and Treviso (60 minutes). Milan is roughly three hours. Feltre is a small town in the Veneto foothills — beautiful, quiet, and not designed for 5,000 cyclists. Accommodation books quickly once entries open.

Entry. Entry typically opens several months before the June race date. The fee is approximately EUR60-80. The field is capped at around 4,000-5,000 riders. It sells out, though not as fast as the Maratona ballot. Enter early and book accommodation simultaneously — waiting on one while sorting the other risks missing both.

Bike logistics. If flying, a bike box or bag to Venice and a hire car to Feltre is the standard approach. Several bike shops in Feltre offer pre-race mechanical checks. Book one in advance if you want a final cassette and brake check the day before.

The day before. Registration is typically in the town centre. Collect your number, ride the first few kilometres of the course as a shakeout, eat a large pasta dinner, and get to bed early. The start is early and the day is long.

Recovery Plan

The Sportful leaves a mark. A structured recovery protects the training base you spent 16 weeks building.

Days 1-3: No riding. Walk, stretch, sleep. Inflammation peaks at 48-72 hours post-event. Compression garments, gentle movement, and carbohydrate-rich meals support the process.

Days 4-7: Light spinning only. Thirty to forty-five minutes at genuine Zone 1. No climbing. No intensity. The legs will feel recovered before they are recovered — ignore the temptation to test them.

Week 2: Gradual return to normal riding. Two to three hours maximum. One ride with a few 5-minute sweet spot efforts to check the legs are responding. If they are not, extend the recovery by another week.

Week 3 and beyond: Resume structured training if desired. Most riders benefit from a period of unstructured riding after a major event — volume without a plan, riding for the sake of riding. The training load tools can help you monitor the rebuild without overdoing it.

Where the Sportful Sits Among the Giants

The Sportful Dolomiti Race belongs in any conversation about Europe's hardest single-day cycling events. The Ötztaler is longer at 238km with 5,500m of climbing. La Marmotte finishes on Alpe d'Huez, which gives it a dramatic edge. The Maratona dles Dolomites is the more famous Dolomite event with a better atmosphere and slicker organisation. The Stelvio gran fondo has the iconic pass.

The Sportful has the Manghen. And the Manghen, on tired legs, in June heat, above the treeline with no shade and ramps that will not relent — that is the thing that separates this event from everything else on the Italian calendar. It is not the most famous gran fondo. It is not the best organised. It is simply one of the hardest. And the riders who finish it know exactly what they have done.

If the Sportful is on your list, the preparation starts with an honest assessment of where you are now. Check your FTP zones. Model your climbing times. Build the plan. And if you want structured guidance through the process — the sessions, the pacing, the nutrition dialled in week by week — the Not Done Yet community is where that work happens.