EcoTrail Paris 120K, by the numbers
Out of the Château de Rambouillet at mid-morning, through the châteaux of the Chevreuse valley, and down the Seine to the Eiffel Tower long after dark. Built from 1,214 finishes in 2026, checkpoint by checkpoint.
Meudon - Marcel Bec km 95.4
On the stretch into this checkpoint the median finisher ran 24% slower than their average pace for the race.
- Median finisher
- 12:58
- You, 16:45 finish
- 12:57
The shading shows how the field's pace on each stretch compares with their own average for the race: rose is slower, blue is faster, and stretches close to average stay grey.
The slowest stretch is the one into Meudon - Marcel Bec (km 95), where the median finisher ran 24% slower than their average pace for the race, 12h 58m into the race. The next hardest is the stretch into Buc - Château (km 75). The course gives time back on the way into Etangs de Hollande, where the field ran 28% faster than their average pace for the race.
Where the field slows down
The slowest stretch is the one into Meudon - Marcel Bec (km 95), where the median finisher ran 24% slower than their average pace for the race, 12h 58m into the race. The next hardest is the stretch into Buc - Château (km 75). The course gives time back on the way into Etangs de Hollande, where the field ran 28% faster than their average pace for the race.
- Median finish
- 16:45
- hours, all finishers
- Finish rate
- 85%
- 1,214 of 1,428 starters
- Fastest 10%
- 13:21
- finish under this
- Women in the field
- 8.2%
- share of finishers
Where the finish times land
1,214 finish times, one bar per hour. The median finisher crosses the line in 16h 45m; the fastest 10% are done under 13h 21m.
Most runners finished between 16 and 17 hours: 160 of them.
About 49% of finishers were faster than that.
| Checkpoint | Km | You arrive |
|---|---|---|
| Château Dampierre | 41.5 | 4:34 |
| Château de la Madeleine | 54.7 | 6:29 |
| Buc - Château | 75.4 | 9:39 |
| Chaville - Stade Jean Jaurès | 88.0 | 11:35 |
| DN St-Cloud - Manufacture | 110.7 | 15:27 |
| Arrivée Pont d'Iéna | 119.7 | 16:45 |
Your time is spread the way the median finisher spread theirs over this course, so the climbs and the night take their real share. Aid-station stops are included, as they are in the recorded splits.
On race day you get a tracker for your phone, a sheet for your crew and a strip to print for your wrist, all set to this time.
When the median finisher reaches each checkpoint
The median finisher's real arrival at all 10 timed checkpoints, and how the field's pace moves segment by segment.
Show all 10 checkpoints as a tableHide the table
| Checkpoint | Km | Median arrival | Field pace |
|---|---|---|---|
| Etangs de HollandeFly it16.7 km | 16.7 | 1:40 | 28% faster |
| Château DampierreFly it41.5 km | 41.5 | 4:34 | 16% faster |
| Château de la MadeleineFly it54.7 km | 54.7 | 6:30 | 2% slower |
| Golf National SQYFly it66.2 km | 66.2 | 8:08 | average |
| Buc - ChâteauFly it75.4 km | 75.4 | 9:39 | 16% slower |
| Chaville - Stade Jean JaurèsFly it88.0 km | 88.0 | 11:36 | 8% slower |
| Meudon - Marcel BecFly it95.4 km | 95.4 | 12:58 | 24% slower |
| DN St-Cloud - ManufactureFly it110.7 km | 110.7 | 15:28 | 15% slower |
| Ile aux CygnesFly it118.1 km | 118.1 | 16:34 | 8% slower |
| Arrivée Pont d'IénaFly it119.7 km | 119.7 | 16:45 | 10% faster |
Field pace compares the median finisher's pace on the stretch into each checkpoint with their own average for the whole race. Runners who missed a cutoff or dropped are not in the data (finishers only).
The course
The key climbs, a pacing plan matched to the terrain, and the whole route in 3D.
EcoTrail Paris 120K questions
What is a typical EcoTrail Paris 120K finish time?
The median finish across 1,214 finishers (2026) is 16h 45m. The fastest 10% finish under 13h 21m; the slowest 10% finish after 20h 17m.
What percentage of runners finish EcoTrail Paris 120K?
85% across the 2026 edition (1,214 finishers from 1,428 starters).
Train for EcoTrail Paris 120K
Make a training plan built around this course and your race day, or see what a model trained on real ultras predicts for you.
When does EcoTrail Paris 120K registration open?
Leave your email and you'll get one message when entries open for the next edition, with the link. Nothing else.
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Writing about EcoTrail Paris 120K? This card shows the course profile and the field's numbers, and links back here.
<iframe src="https://runpact.com/embed/races/ecotrail-paris-120k" title="EcoTrail Paris 120K on RunPact" width="100%" height="200" style="border:0;border-radius:12px" loading="lazy"></iframe>Methodology and sources
Split data: official per-runner checkpoint times for the 2026 EcoTrail Paris 120K, 1,214 finishers at 10 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. Apart from the finish-time explorer, which scales the median finisher's splits to the time you pick, no figure on this page is modeled or extrapolated.