France · Île-de-France
EcoTrail Paris 122km: Rambouillet to the Eiffel Tower — and Almost Entirely Flat
Distance
122 km
Date
Droit d’inscription
200 EUR
€ / km
€1.64
Nouvelle date en attente
Cette course a déjà eu lieu. La date de la prochaine édition est en attente.
Capital-to-countryside in one run: urban landmarks into forest trails with unbeatable travel logistics.
EcoTrail Paris 122km — marketed as the Trail 120km — is one of Europe's flattest ultra-trail distances, running point-to-point from the Château de Rambouillet through the forests and châteaux of the Chevreuse Valley to finish at the foot of the Eiffel Tower on Paris's Pont d'Iéna. With just 2,000m of elevation gain over 122.2km and approximately 83.4% flat terrain, it ranks as the 24th flattest course of 390 European ultra trails in the DTR database — yet a 30% DNF rate in its 2026 inaugural edition signals the distance demands respect. Launched in 2026 as a new flagship distance for the Salomon EcoTrail Paris — an event founded in 2008 that draws 18,500 participants across all distances — the 120km sells out rapidly. The start is at the royal Château de Rambouillet, reached by Transilien train from Paris, with CDG and Orly airports under one hour away; no car is needed. A UTMB qualifier awarding 20K, 50K, and 100K Running Stones, capped at 2,500 entrants, with a 21h15 cutoff.
Élévation et Terrain
Mètres totaux
2,000m
D+/KM
16.4m/km
Pour référence, le Tor des Géants 330 km a 73 D+/km.
Pente montante moyenne
7.4%
Pente descendante moyenne
-6.6%
Distribution du gradient de montée
| 2–5% | 10.3 km | |
|---|---|---|
| 5–10% | 6 km | |
| 10–15% | 3.1 km | |
| 15–20% | 1.3 km | |
| 20%+ | 0.9 km |
Profil de parcours
AnalysedDétail du terrain
| 17.5% | Montée |
|---|---|
| 62% | Plat |
| 20.5% | Descente |
Terrain
Ascensions
Principales montées
| 1 | 2 km · 93 m gain starts km 103 · avg 4.8% · max 25.3% |
|---|---|
| 2 | 1.7 km · 81 m gain starts km 48 · avg 4.7% · max 18.5% |
| 3 | 1 km · 76 m gain starts km 57 · avg 8% · max 33% |
Principales descentes
| 1 | 1.1 km · 93 m drop starts km 102 · avg -8.6% · max -15.7% |
|---|---|
| 2 | 1.3 km · 91 m drop starts km 41 · avg -7.2% · max -15.7% |
| 3 | 1.2 km · 87 m drop starts km 55 · avg -7% · max -20.4% |
EcoTrail Paris 122km: Rambouillet to the Eiffel Tower — and Almost Entirely Flat
How flat is EcoTrail Paris 122km compared to other European ultra trails — and is it still hard?▼
Q: How flat is EcoTrail Paris 122km compared to other ultra trails in Europe? A: EcoTrail Paris 122km ranks 367th of 390 European ultra trails for percent-flat terrain in the DTR database, making it the 24th flattest course measured. Approximately 83.4% of the course is entirely level terrain. With just 2,000m of elevation gain over 122.2km — 16.4m per kilometre — the race carries a fraction of the vertical load of a typical alpine 120km, which delivers 70 to 100m per km. Both the biggest single climb (ranked 344th of 390) and the biggest single descent (342nd of 390) are among the most modest in the database. That said, 122km is 122km: the 2026 inaugural edition recorded a 30% DNF rate, and back-of-pack runners face up to six hours of night running under the 21h15 cutoff.
What is the route of EcoTrail Paris Trail 120km, and what landmarks does it pass?▼
Q: What is the course route of EcoTrail Paris Trail 120km and what landmarks does it pass? A: The 120km starts at the Château de Rambouillet — a former royal residence southwest of Paris — and travels northeast through the forests and hillsides of western Île-de-France. The course passes through the Chevreuse Valley, renowned for its historic châteaux, before entering the suburban and then urban western edge of Paris. The race finishes at Pont d'Iéna at the foot of the Eiffel Tower in central Paris. The course is 95% natural terrain — forest trails, field paths, and woodland tracks — with a final urban section through Paris streets to reach the iconic finish.
Does EcoTrail Paris 122km sell out, who can enter, and what is the 2027 entry fee?▼
Q: Does EcoTrail Paris 122km sell out, and how do I register for 2027? A: Yes — the 2026 spring edition sold out across all distances including the 120km. The 122km is capped at 2,500 participants and registration fills rapidly when it opens. For the 2027 spring edition (March 20, 2027), pre-registration is available at en.ecotrailparis.com and full registration opens via njuko.com. A waiting list is available for cancelled spots once registration closes. The 2026 entry fee was approximately €200 (€1.64 per km).
What UTMB Running Stones does EcoTrail Paris 122km award, and what is the time limit?▼
Q: What UTMB Running Stones does EcoTrail Paris 122km award, and what other certifications does it hold? A: EcoTrail Paris 122km is a UTMB qualifier awarding Running Stones across three categories: 20K stones, 50K stones, and 100K stones. The time limit is 21h15. ITRA points awarded are 0 — the low elevation profile (2,000m D+ over 122km) does not meet ITRA point thresholds despite the distance. The event also carries an FFA Silver label. There is no minimum qualifying time or prior race prerequisite for the 120km.
Fichiers de course
Logistique
Aéroport le plus proche
Paris CDG (CDG) / Paris Orly (ORY)
Notes
Start: <1 hr / Public transport: Excellent (metro/RER)
