Salomon EcoTrail Paris.
The Salomon EcoTrail Paris Trail 120 km runs from the Château de Rambouillet to the foot of the Eiffel Tower: 123 kilometres with 1,773 metres of climbing, none of it in a single ascent over 80 metres. It is an ultra without mountains – and for exactly that reason one on which you can, and must, keep running.
Salomon EcoTrail Paris 2027: Course, Elevation & Route Profile
The start is on Saturday morning between 09:00 and 09:15 at the Château de Rambouillet, some 50 kilometres south-west of Paris at a little over 145 metres. From there the route crosses the forests, hillsides and paths of the western Île-de-France, with a long section through the Vallée de Chevreuse and past its châteaux.
Across all 123 kilometres the profile is remarkably uniform: the course oscillates almost throughout between 110 and 175 metres, never dropping below 28 or rising above 190. Forty-two percent of it is level, 21 percent uphill and 26 percent downhill, and the steepest drag measures 1.2 kilometres at 6.7 percent at kilometre 57. The densest cluster of climbs sits between kilometre 49 and 63 – in the middle of the night for most of the field.
The last ten kilometres fall from around 130 metres to 30 and follow the Seine into central Paris, finishing on the Pont d'Iéna directly beneath the Eiffel Tower. In total 1,773 metres of ascent against 1,886 of descent; the organiser publishes 2,000 metres. The cut-off is 21 hours 15, and the race is a UTMB 100K qualifier.
| Start | Length | Ø | Max. | Gain | Cat. |
|---|---|---|---|---|---|
| km 49 | 1 km | 7.2 % | 15.5 % | +72 m | — |
| km 51 | 0.5 km | 11.5 % | 14 % | +55 m | — |
| km 56.8 | 1.2 km | 6.7 % | 20 % | +78 m | — |
| km 62.3 | 0.6 km | 10.4 % | 17.3 % | +60 m | — |
| km 79.6 | 1.1 km | 5.9 % | 19.1 % | +63 m | — |
| km 83.9 | 1.2 km | 5.9 % | 12.7 % | +68 m | — |
| km 101.6 | 0.5 km | 12.5 % | 18.7 % | +56 m | — |
| km 103.1 | 1.1 km | 7.8 % | 18.8 % | +84 m | Cat. 4 |
Climb categories follow the road-cycling convention and rate the terrain itself (length and gradient) regardless of sport: Cat. 4 marks the easiest rated climbs, Cat. 1 the hardest, and HC (hors catégorie, “beyond categorization”) is reserved for the most brutal ascents. Short climbs below the Cat. 4 threshold stay unrated.
How to pace Salomon EcoTrail Paris.
Start under control
An ultra without real climbs is not an easier ultra, it is a different one. There is no gradient here that forces you to walk and thereby unloads your running muscles: across 123 kilometres you run almost throughout. That makes early discipline more important than on any mountain ultra – run the first thirty kilometres at a pace that feels almost embarrassingly slow.
Hold your rhythm
The race is decided between kilometre 49 and 70. That is where the course's climbs bunch most densely, in darkness for most runners and after eight to ten hours on your feet. Use those short rises deliberately as walking breaks even though they are runnable – they are the only built-in recovery this course offers.
Spend what is left
The trap is the last ten kilometres. From 130 metres down to 30, on made paths along the Seine, with the lit Eiffel Tower in view: the course gets fast, the field lifts, and your legs have 110 kilometres of continuous running behind them. Plan that stretch as a race of its own and deliberately keep something back until kilometre 113.
Training plan for Salomon EcoTrail Paris: 12-week build
Build the base
Expect 12 to 21 hours; the cut-off is 21:15. The demand is unusual for a 120: a very long, almost continuously runnable aerobic effort with over forty percent of the course flat and not a single climb longer than a kilometre and a half.
Train race pace
Training therefore emphasises running volume and fatigue resistance rather than climbing strength. Long runs of five to seven hours on rolling woodland track with 600 to 1,000 metres of ascent model the demand; back-to-back weekends with two long runs on consecutive days are worth more here than any single mountain session.
Rehearse the course
The race-deciding phase is the night. For most runners ten to sixteen hours fall in darkness, on forest paths west of Paris. Do at least two long runs entirely at night with a head torch, test the full mandatory kit, and rehearse a fuelling strategy across twelve hours and beyond.
Arrive fresh
On conditions: mid-to-late March in the Île-de-France means cool to cold nights, frequently wet woodland ground and several degrees between a nine o'clock start and the small hours. Plan a layering system rather than a jacket, train on mud, and factor the ten fast closing kilometres on tarmac and made paths into your shoe choice.
Courses
Download the Salomon EcoTrail Paris course as a GPX file for your watch or bike computer.
Let YOUB adapt your plan for Salomon EcoTrail Paris dynamically
Ben connects your goal, the course, current load, recovery, and calendar. Your plan stays pointed at race day even when real life is not perfectly plannable.
Everything about Salomon EcoTrail Paris.
How long is Salomon EcoTrail Paris?
Salomon EcoTrail Paris is 120.1 km long. That distance shapes how much aerobic endurance, pace durability, and race-specific work belong in the training plan.
How much elevation gain does Salomon EcoTrail Paris have?
Salomon EcoTrail Paris has around 1,773 m of elevation gain over 120.1 km. That affects pacing, muscular load, and preparation for late-race sections.
What is the route profile of Salomon EcoTrail Paris?
Salomon EcoTrail Paris is classified as Rolling, averaging 14.4 vertical metres per kilometre. 42% of the route is flat, 21% climbs moderately (2 to 6%) and 6% is steeper than 6%.
What climbs does Salomon EcoTrail Paris have?
The hardest climb of Salomon EcoTrail Paris starts at kilometre 103.1, runs for 1.1 km at an average of 7.8% and gains 84 metres. Cycling-convention rating: Cat. 4. 8 climbs are mapped in total.
Is Salomon EcoTrail Paris a loop course?
No, Salomon EcoTrail Paris is a point-to-point course: start and finish are in different places.
Is there a GPX file for the Salomon EcoTrail Paris course?
Yes. The Salomon EcoTrail Paris course is on this page as a free GPX download — ready to import into Garmin, Wahoo, Komoot, Strava or any other app that reads GPX.
How should I prepare for Salomon EcoTrail Paris?
Preparation for Salomon EcoTrail Paris should account for 120.1 km, 1,773 m of elevation gain, current training load, and available training time. An adaptive plan helps place key sessions without ignoring recovery and real life.
What pacing strategy works for Salomon EcoTrail Paris?
The pacing strategy for Salomon EcoTrail Paris should reflect 120.1 km, 1,773 m of elevation gain, and your current fitness. Start controlled and keep margin for sections where the profile or fatigue makes target pace harder.
When does Salomon EcoTrail Paris take place?
Salomon EcoTrail Paris takes place on March 20, 2027.
Where does Salomon EcoTrail Paris take place?
Salomon EcoTrail Paris takes place in Paris, France.
Which distances does Salomon EcoTrail Paris offer?
Salomon EcoTrail Paris offers 7 distances — Trail 120 km: 120.1 km; Trail 80 km: 81.8 km; Trail 45 km: 47.1 km; Trail 30 km: 29.6 km; Trail 35 km: 35 km; Trail 20 km: 21.8 km and 1 more.
How do I register for Salomon EcoTrail Paris?
Registration runs through the organiser: ecotrailparis.com. YOUB shows you the course, elevation profile and training plan for your preparation.
