Marmotte Granfondo Alpes takes place on Sun, Jun 27, 2027 in Bourg-d'Oisans, France. The main route is 174 km.
- Date
- Sun, Jun 27, 2027
- Start
- Bourg-d'Oisans 🇫🇷
- Distance
- 174 km
- Climbing
- 5,000 m
- Level
- Open to all
The legendary Alpine gran fondo over the Glandon, Télégraphe and Galibier, finishing atop Alpe d'Huez.
What this race demands
This 174-kilometer Alpine gran fondo requires sustained climbing across multiple legendary mountain passes and finishing atop Alpe d'Huez.
Climbing volume
The route traverses the Glandon, Télégraphe, Galibier, and Alpe d'Huez, demanding exceptional climbing endurance over a long distance.
Pacing discipline
Covering 174 kilometers through major Alpine passes requires strict energy management early in the ride to prevent late fatigue.
Durability
The combination of high-altitude passes and a long mountain profile places severe structural demands on the rider's legs and core.
A sustained effort of this duration requires consistent carbohydrate intake of 60 to 90 grams per hour to maintain glycogen stores.
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
9:25–11:20
Peak-week training
6–8 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 Marmotte Granfondo Alpes is 43 weeks away. This is how a coach divides that time. The first phase starts now.
01Base31 weeks · Aug 31, 2026 – Apr 4, 2027
Aerobic foundation: mostly steady endurance work that grows the aerobic engine and the durability the later phases stand on.
02Build6 weeks · Apr 5, 2027 – May 16, 2027
Progressive overload: training load climbs in waves, with harder weeks stacked on the base and planned recovery weeks that let the gains land.
03Peak3 weeks · May 17, 2027 – Jun 6, 2027
The hardest weeks of the plan: race-specific intensity at nearly full training load, sharpening exactly what this race asks for.
04Taper2 weeks · Jun 7, 2027 – Jun 20, 2027
Volume drops while intensity stays: short, sharp efforts keep the legs awake as fatigue drains away.
05Race week1 week · Jun 21, 2027 – Jun 27, 2027
Openers, rest and logistics. The work is done; the job now is arriving fresh.
Similar races
Organising this race?