Entry through the organiser
The organiser, a third party. We take no entries and have no part in the race.
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Running Paris? Do your long runs with the gel you will race on. Get them on Amazon Amazon partner link
The Salomon EcoTrail Paris is a hilly course of 10 km with 525.1 m of climbing. Its lowest point is 23 m and its highest 185 m above sea level.
The autumn 80 km runs one way from the Château de Saint-Germain-en-Laye to the Domaine National de Saint-Cloud, 75% on natural ground, with a 12h30 time limit.
© OpenStreetMap contributors
km 0mile 0
Start of the 80 km and 50 km, at the Domaine National du Château de Saint-Germain-en-Laye.
km 1.1mile 0.7
The organiser's 50 km page names the terrace of Saint-Germain-en-Laye, with its panorama over the capital, as the opening of the course.
Height drawn many times taller than life · GEDTM30
Dashed: bridge
The organiser starts the 80 km from the Domaine National du Château de Saint-Germain-en-Laye, by waves between 11:15 and 11:20 on 17 October 2026, and sends it through the Forêt domaniale de Saint-Germain and the Domaine de Marly to the Domaine National de Saint-Cloud. It lists 1,000 m of positive elevation, 75% nature, a 12h30 limit and a cap of 2,000 runners, and the race holds the FFA Silver label. The 50 km of the same day starts from the same château and finishes at the same domain.
Sourced
The course starts at 81 m at Saint-Germain-en-Laye. The lowest ground, 23 m, comes in the Seine valley at about km 21, where the course crosses bridges over the river between about km 18 and km 23, and the highest, 185 m, at about km 45. The organiser’s figure is 1,000 m of positive elevation. The figures are for the 2026 autumn 80 km course.
Measured
Entry through the organiser
The organiser, a third party. We take no entries and have no part in the race.
Race fuel
One every 40 minutes, the orange marks on the profile, by the clock:
Under about 75 minutes most runners need no gel: water at the aid stations does it.
For your long training runs:
Our pick: SiS BETA Fuel gel, box of 6, strawberry and lime. 40 g of carbohydrate a gel, about twice a usual gel, from two kinds of sugar your body takes up side by side. Enough for race day and two test long runs.
Easy to forget on race morning: pack them with your bib the night before.
We earn a small fee if you buy through these links. The price is the same.
In Canada the button opens GU Energy Gel, Salted Caramel, 24-pack, the best seller there.
Outside the Netherlands, Belgium, Germany, Austria and Switzerland, the UK and Ireland, Spain and Portugal, Italy, the rest of the EU and Canada the button opens GU Energy Gel, Chocolate Outrage, 24-pack on Amazon.com, the best seller there.
An invisible layer before the start keeps seams, straps and shoes from rubbing skin raw.
Put it on before you leave for the start: heels and toes, inner thighs, under a bra or heart-rate strap.
Try it on a long run first, like everything you use on race day.
We earn a small fee if you buy through these links. The price is the same.
Holds your bib without safety pins through your top, with loops for up to 8 gels.
Clip the bib on the night before, so it goes on with your shorts in the morning.
Keep the number on the front, where officials and photographers can see it.
We earn a small fee if you buy through these links. The price is the same.
One tablet in a bottle puts back some of the salt you sweat out.
One tablet in 500 ml of water in the hour before the start.
Only if you have used them in training: nothing new on race day.
We earn a small fee if you buy through these links. The price is the same.
One in a pocket cushions a blister if one starts.
Put it on clean, dry skin and leave it until it comes off by itself.
Give a couple to whoever comes to cheer, so they are there at the km you need them.
We earn a small fee if you buy through these links. The price is the same.
More races to look at after the Salomon EcoTrail Paris.