CCC - Courmayeur-Champex-Chamonix Training Plan: Master the 101km Alpine Challenge

A comprehensive 16-week training guide to conquer 6,100m of elevation gain across France's most technical alpine terrain. Learn the strategies, gear, and mental tools elite ultrarunners use to finish strong at 2,537m altitude.

101km
6,100m D+
26.5h cutoff
Chamonix-Mont-Blanc, France
Late August

Understanding the CCC - Courmayeur-Champex-Chamonix Course

The CCC - Courmayeur-Champex-Chamonix is a 101km alpine ultra marathon connecting three iconic mountain towns across the Mont Blanc massif. This is not a point-to-point tour; it's a serious alpine challenge with 6,100m of elevation gain and 6,100m of elevation loss that demands respect for every vertical meter. The course reaches a maximum altitude of 2,537m and combines technical single-track descents, exposed ridgelines, and steep alpine trails that will test your technical footwork at every turn.

The race typically runs in late August, placing runners on high-altitude terrain during warmer conditions but never warm at elevation. You'll experience significant temperature swings—starting cool at dawn in Courmayeur, potentially facing afternoon heat on exposed ridges, and dealing with cold and fatigue during night sections. The terrain mixes well-maintained trail with loose scree, root-laden forest sections, and boulder fields that demand concentration even when exhausted. This is a race where navigation matters, where falling on a technical descent costs precious time, and where altitude acclimatization begins weeks before the start.

  • 101km distance with identical elevation gain and loss (6,100m each) means constant climbing and descending
  • Maximum altitude of 2,537m demands gradual acclimatization and conservative early pacing
  • Technical terrain requires specific downhill training and confidence on steep, loose ground
  • Late August timing means variable weather: cool mornings, exposed sun on ridges, cold nights at altitude
  • 26.5-hour cutoff is generous but requires consistent forward momentum; expect 18-22 hours for competitive finishers

CCC - Courmayeur-Champex-Chamonix Training Plan Overview

A 16-week training plan designed specifically for the demands of CCC - Courmayeur-Champex-Chamonix.

Base Building

4 weeks

Establish aerobic foundation with long, steady trail runs and strength work; introduce altitude simulation if possible

Peak: 80km/week

Elevation Specificity

5 weeks

Build climbing power through repeated hill repeats, back-to-back long runs with significant vertical, and technical terrain practice

Peak: 100km/week

Technical Proficiency

4 weeks

Master downhill technique, practice night running, simulate race intensity with longer sustained efforts at altitude

Peak: 95km/week

Taper & Recovery

3 weeks

Reduce volume by 40%, maintain intensity, prioritize sleep and mental preparation, complete final shakedown runs

Peak: 55km/week

Key Workouts

01Sustained hill repeats: 8-12 x 4-5 minute climbs at 90% effort with 2-minute recovery jogs; builds climbing economy and mental resilience
02Back-to-back long runs: Day 1 (15-18km with 1,000-1,200m elevation gain), Day 2 (12-15km with 800-1,000m gain); teaches your body to climb when already fatigued
03Technical downhill intervals: 10-15 x 90-second steep descents on loose terrain at 85% effort; strengthens quads, builds confidence, improves footwork
0424-hour simulation runs: Single long run covering 25-30km with 2,500-3,000m elevation gain; teaches pacing, tests nutrition, builds mental toughness
05Night navigation practice: 10-15km evening runs in familiar terrain wearing headlamp; acclimates to darkness, tests headlamp setup, practices moving efficiently when tired
06Threshold work on slopes: 2-3 x 5-7 minute climbs at or just below lactate threshold (hard but sustainable); improves climbing speed and efficiency
07Altitude-specific intervals: If possible, perform key workouts at 1,500m+ elevation; if unavailable, use hypoxic masks or plan pre-race altitude camp 3-4 weeks out
08Vertical kilometer repeats: 1km climbs (roughly 150-200m elevation) at near-maximal effort with full recovery; builds explosive climbing power specific to the race demands

Get a fully personalized CCC - Courmayeur-Champex-Chamonix training plan tailored to your fitness, schedule, and goals.

CCC - Courmayeur-Champex-Chamonix Race Day Tips

  1. 1Start conservatively: The opening kilometers feel deceptively easy—many runners blow up before 30km by going too hard early. Treat the first two hours as a warm-up; the race doesn't begin until you hit the first major exposed ridge.
  2. 2Master the downhill: Technical descents are where races are won and lost. Brake less, trust your feet more, and remember that falling costs far more time than controlled speed. Practice downhill technique obsessively in training.
  3. 3Altitude management: At 2,537m, every system is stressed. Breathe deliberately on climbs, don't force pace above your comfortable effort level, and assume your perceived effort will be 15-20% higher than on flat terrain.
  4. 4Fuel early and often: Don't wait until you're bonking to start eating. Consume 300-400 calories per hour consistently; weak nutrition strategies fail spectacularly at kilometer 70+ when your appetite disappears but your legs are empty.
  5. 5Use the night strategically: Darkness falls around 20:00 in late August. Plan your night fueling carefully—solid foods become harder to stomach, so shift to liquids and gels after sunset. Many runners gain time on others during the night by maintaining steady effort when others slow.
  6. 6Manage foot care proactively: Blisters and hot spots can derail a 26-hour race. Stop at aid stations to check feet at 30km and 60km; a two-minute foot care stop beats limping the last 20km with a brewing blister.
  7. 7Mental game: Around kilometer 60, you'll be tired enough that your brain questions the whole endeavor. This is normal. Break the race into 20km segments; don't think about finishing, just about reaching the next aid station.
  8. 8Study the weather window: Late August weather in the Alps is variable. If forecasts show incoming storm systems, be ready to move fast through exposed sections and adjust your layering strategy.
  9. 9Respect the cutoff: 26.5 hours sounds long, but it's tighter than it seems on a 101km course with 6,100m elevation gain. If you're significantly off pace by kilometer 60, adjust your strategy—walk climbs, move efficiently downhill, maintain caloric intake.

Essential Gear for CCC - Courmayeur-Champex-Chamonix

Trail shoes with aggressive tread and ankle support: This terrain demands confidence. Choose shoes with proven grip on scree and loose ground; consider shoes with rock plates for protection but balance weight against support.
Lightweight layering system: Start with a merino or synthetic base layer, add an insulating mid-layer, and carry a waterproof shell. Plan for temperature swings from cool mornings to potentially freezing nights at altitude.
Hydration pack (3-5L capacity): Enough volume to carry 2-3L at once, plus pockets for nutrition and gear. Test your pack in training—a poorly fitting pack will cause shoulder issues by kilometer 30.
Reliable headlamp with backup battery: LED headlamp with at least 100 lumens, plus an extra battery set or a lamp that charges via USB. Test your headlamp extensively; discover any issues in training, not at 22:00 on the course.
Trekking poles: Essential on this terrain. Poles reduce impact on descents, provide upper-body propulsion on climbs, and save your knees on the repeated elevation changes. Choose adjustable poles and practice using them efficiently.
Lightweight first aid kit: Include blister treatment (Leukotape or Compeed), anti-inflammatory tablets, electrolyte tablets, and a small tube of chamois cream. Most issues can be managed at aid stations, but carry the essentials.
Nutrition variety: Test multiple gels, bars, and real food options (nuts, dried fruit, rice cakes) in training. You'll be eating for 18-22 hours; having foods you're sick of is a real problem at kilometer 70.
Warm hat and gloves: Late August nights at 2,537m altitude can be surprisingly cold. Carry lightweight options; they pack small but make a huge difference when temperature drops.
Sun protection: SPF 50+ sunscreen, sunglasses, and a cap or buff. Altitude intensifies UV exposure, and reflected sunlight off high-altitude snow (if present) doubles the burn risk.
Repair kit: Minimal but essential—a spare shoelace, a small multi-tool, and a few meters of athletic tape. Weight is minimal; usefulness if something breaks is enormous.

Frequently Asked Questions

How much elevation gain should I be able to handle before attempting the CCC?
You should comfortably handle 3,000-3,500m of elevation gain in a single training run before the race. Most successful CCC finishers have completed multiple 50-70km ultramarathons with 2,500m+ elevation. If your longest elevation build has been 2,000m or less, add 4-6 weeks to your training cycle to build the requisite power and durability.
Is a 16-week training plan enough to prepare for the CCC?
Sixteen weeks is reasonable if you have a solid trail running base (running 40+ km per week consistently for at least 6 months prior). If you're new to ultrarunning or trail running, extend your timeline to 20-24 weeks. The elevation-specific work in weeks 5-9 cannot be rushed; cutting this phase short significantly increases injury risk and DNF probability.
What's the best way to simulate altitude training if I don't live in the mountains?
Three strategies: (1) Plan a 3-4 week pre-race altitude camp at 1,500-2,000m elevation 4-5 weeks before the race; (2) Use a hypoxic mask for specific workouts, though the training benefit is modest compared to real altitude; (3) Perform your key workouts at the highest elevation available in your region and accept that you'll have a partial acclimatization advantage by arriving early in France. Most sub-3,000m runners do fine with gradual acclimatization on the course itself.
How many aid stations are on the CCC course and how should I plan fueling?
Check the official UTMB website (utmb.world/ccc) for current aid station locations and services. Plan to carry 2-3L of fluid capacity and assume aid stations are 10-15km apart. Fuel continuously rather than waiting for aid stations; carry gels, bars, and electrolyte tablets. Test your fueling strategy extensively in training; the worst time to discover your stomach can't handle certain foods is kilometer 65.
What pace should I target for the 101km CCC course?
Expect an average pace of 5.5-7.5 minutes per kilometer over the full 101km and 6,100m elevation gain combined. This accounts for the massive climbing and technical descents. If you're running 18-20 hours, you're averaging roughly 5-5.5 min/km; 20-22 hours averages 5.5-6.5 min/km. Remember that pace varies wildly—climbs might be 12-15 min/km while safe downhill sections might be 4-5 min/km. Focus on effort level and consistent forward momentum rather than maintaining a specific pace.
How should I manage nutrition during the night portion of the race?
Expect 4-6 hours of darkness starting around 20:00 in late August. Transition from solid foods to easier-to-digest options: sports drinks, gels, nut butters, and energy bars. Eat smaller amounts more frequently as appetite drops. Keep a small thermos of warm broth or soup if your crew can support it; warm calories sit better than cold nutrition when you're cold and tired. Practice night eating in training during your 24-hour simulation run.
What's the most common reason runners don't finish the CCC?
Poor pacing in the first 40km leads to crushing fatigue by kilometer 60, where the technical terrain and altitude compound the problem. Runners either hit a wall and blow up, or they slow to a crawl and miss the 26.5-hour cutoff. The second most common issue is blisters and foot problems from inadequate foot care planning. Train specifically for the elevation gain, practice downhill technique, and nail your fueling strategy.
Should I run with a crew or attempt the CCC solo?
The CCC is manageable without a dedicated crew, but having support at aid stations (if allowed by race rules) saves enormous energy. Check the official UTMB website for crew policies. If you're going solo, practice navigating with your headlamp, carry everything you need, and pre-place drop bags if the race permits. Most successful solo finishers are experienced ultramarathoners comfortable being self-sufficient for 18-22 hours.

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