100 km de Millau takes place on Sat, Sep 26, 2026 in Millau, France. The main route is 100 km.
- Date
- Sat, Sep 26, 2026
- Start
- Millau 🇫🇷
- Distance
- 100 km
- Climbing
- 1,100 m
- Level
- Open to all
Les 100 km de Millau is the oldest 100 km road running race in France, featuring a challenging and scenic course through the Grands Causses regional natural park and under the Millau Viaduct.
Official event pageWhat this race demands
The 100 km de Millau requires sustaining forward motion across an ultra-distance road running format over 1100 meters of elevation gain.
Ultra Distance Endurance
Covering 100 kilometers on foot places extreme demands on musculoskeletal durability, soft tissue resilience, and pacing discipline.
Climbing Management
Accumulating 1100 meters of elevation over the course requires efficient climbing mechanics and careful energy management to prevent premature fatigue.
Given the extended duration well beyond 2.5 hours, athletes must commit to a structured carbohydrate intake of 60 to 90 grams per hour to sustain energy levels.
What would it take you?
Pick the level closest to yours for an estimate of finish time on this course and the training a solid preparation needs.
Estimated finish
10:20–12:30
Peak-week training
5–7 h/week
A model estimate from distance, climbing and level, not a promise. Conditions, drafting and pacing move it.
IntervalCoach turns those weekly hours into a concrete plan built around your actual fitness. Start with this race as your goal
Your road to race day
Race day at 100 km de Millau is 5 weeks away. This is how a coach divides that time. The first phase starts now.
01Peak2 weeks · Aug 23, 2026 – Sep 5, 2026
The hardest weeks of the plan: race-specific intensity at nearly full training load, sharpening exactly what this race asks for.
02Taper2 weeks · Sep 6, 2026 – Sep 19, 2026
Volume drops while intensity stays: short, sharp efforts keep the legs awake as fatigue drains away.
03Race week1 week · Sep 20, 2026 – Sep 26, 2026
Openers, rest and logistics. The work is done; the job now is arriving fresh.
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