EcoTrail Paris 45K, by the numbers
The short way into Paris, through the western woods down to the riverbank and up the Eiffel Tower to finish. Built from 1,769 finishes in 2026, checkpoint by checkpoint.
Ile aux Cygnes km 45.4
On the stretch into this checkpoint the median finisher ran 10% slower than their average pace for the race.
- Median finisher
- 5:07
- You, 5:15 finish
- 5:05
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 Ile aux Cygnes (km 45), where the median finisher ran 10% slower than their average pace for the race, 5h 07m into the race. The next hardest is the stretch into DN St-Cloud - Manufacture (km 38). The course gives time back on the way into Chaville - Stade Jean Jaurès, where the field ran 10% faster than their average pace for the race.
Where the field slows down
The slowest stretch is the one into Ile aux Cygnes (km 45), where the median finisher ran 10% slower than their average pace for the race, 5h 07m into the race. The next hardest is the stretch into DN St-Cloud - Manufacture (km 38). The course gives time back on the way into Chaville - Stade Jean Jaurès, where the field ran 10% faster than their average pace for the race.
- Median finish
- 5:16
- hours, all finishers
- Finish rate
- 93%
- 1,769 of 1,902 starters
- Fastest 10%
- 4:14
- finish under this
- Women in the field
- 23.5%
- share of finishers
Where the finish times land
1,769 finish times, one bar per hour. The median finisher crosses the line in 5h 16m; the fastest 10% are done under 4h 14m.
Most runners finished between 5 and 6 hours: 760 of them.
About 47% of finishers were faster than that.
| Checkpoint | Km | You arrive |
|---|---|---|
| Chaville - Stade Jean Jaurès | 20.6 | 2:04 |
| DN St-Cloud - Manufacture | 38.0 | 4:09 |
| Ile aux Cygnes | 45.4 | 5:05 |
| Arrivée Pont d'Iéna | 47.0 | 5:15 |
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 4 timed checkpoints, and how the field's pace moves segment by segment.
Show all 4 checkpoints as a tableHide the table
| Checkpoint | Km | Median arrival | Field pace |
|---|---|---|---|
| Chaville - Stade Jean JaurèsFly it20.6 km | 20.6 | 2:05 | 10% faster |
| DN St-Cloud - ManufactureFly it38.0 km | 38.0 | 4:10 | 8% slower |
| Ile aux CygnesFly it45.4 km | 45.4 | 5:07 | 10% slower |
| Arrivée Pont d'IénaFly it47.0 km | 47.0 | 5:16 | 9% 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 45K questions
What is a typical EcoTrail Paris 45K finish time?
The median finish across 1,769 finishers (2026) is 5h 16m. The fastest 10% finish under 4h 14m; the slowest 10% finish after 6h 25m.
What percentage of runners finish EcoTrail Paris 45K?
93% across the 2026 edition (1,769 finishers from 1,902 starters).
Train for EcoTrail Paris 45K
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 45K 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 45K? This card shows the course profile and the field's numbers, and links back here.
<iframe src="https://runpact.com/embed/races/ecotrail-paris-45k" title="EcoTrail Paris 45K 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 45K, 1,769 finishers at 4 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.