Marathon des Cerces, by the numbers
The Cerces loop without the Col du Granon — the same high ground above Le Monêtier, one long climb fewer. Every figure on this page is computed from 272 real finishes from the 2025 edition — checkpoint by checkpoint. Not estimates. The actual field.
- Median finish
- 9:07
- hours, all finishers
- Finish rate
- 93.5%
- 272 of 291 starters
- Front of the pack
- 6:59
- fastest 10% finish under
- Women in the field
- 22.8%
- share of finishers
Where your hours would land.
272 finish times, one bar per hour. The median finisher crosses at 9h 07m; the fastest 10% are done under 6h 59m.
When the field actually arrives.
The median finisher's real arrival at all 5 timed checkpoints, and how the field's pace moves segment by segment.
| Checkpoint | KM | Median arrival | Field pace here |
|---|---|---|---|
| Pic du Chardonnet | 10.4 | 2:04 | 1.03× |
| Col de Roches Noires | 18.0 | 3:29 | 0.93× |
| Refuge de Buffère | 26.9 | 4:45 | 0.75× |
| Grand Aréa | 37.4 | 7:46 | 1.40× |
| Arrivée | 46.4 | 9:07 | 0.73× |
Field pace: the median finisher's pace on the segment into this checkpoint, relative to their own whole-race average — right/orange = slower than race pace, left/blue = faster. Runners who missed a cutoff or dropped are not in the data (finishers only).
The race is planned on paper. It's decided out there.
The slowest stretch of the entire course for the median finisher — 1.40× their whole-race pace, 7h 46m into the race.
The second-hardest segment — 1.03× their whole-race pace, 2h 04m into the race.
The fastest segment on the course for the median finisher — the field moves at 0.73× its whole-race pace into Arrivée.
Marathon des Cerces FAQ
- What is a typical Marathon des Cerces finish time?
- The median finish across 272 finishers (2025) is 9h 07m. The fastest 10% finish under 6h 59m; the slowest 10% finish after 11h 14m.
- What percentage of runners finish Marathon des Cerces?
- 93.5% across the 2025 edition (272 finishers from 291 starters).
Now run it before you run it.
Fly the full course in 3D, get an ML finish-time prediction built on splits like the ones above, and generate a training plan pointed at race day.
Methodology & sources
Split data: official per-runner checkpoint times for the 2025 Marathon des Cerces, 272 finishers at 5 timed checkpoints. All split-derived figures describe finishers only — runners who dropped or missed a cutoff do not appear in split data, so buffer statistics understate how tight cutoffs are for the full field. Medians are used throughout; no figure on this page is modeled or extrapolated.