
Trail des Sources de la Loire
Trail Running · Costaros, France · Monday, November 9, 2026 — November 10, 2026

Organized by
Toutes les courses
Sport
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Trail Running
Participants
0
Goya participants
About this event
Enduring and spectacular, this trail race takes place in Costaros (Haute-Loire) in late October, in the heart of Auvergne-Rhône-Alpes. With 7 distances ranging from 11 to 111 km, some routes climb up to 1700 m in altitude and traverse forests and cols, sometimes in the dim light. The 111 km route loops around Costaros and passes through Bessarioux, Fleurac, Mont Mézenc and Lac d’Issarlès for a monumental experience in the sport.
With today’s schedule, you won’t risk sleeping like a dormouse!
If you’re looking for an ultra-trail in the heart of Auvergne-Rhône-Alpes ? The Trail des Sources de la Loire has everything to win you over! In Costaros, in the Haute-Loire department, this exceptional race invites you at the end of October to test yourself against the elements. 🏞️
It isn’t strictly necessary to be a trail nut to participate. There’s also something for seasoned amateurs. So on the menu, 7 distances: 11 km, 18 km, 32 km, 38 km, 50 km, 61 km and finally the mammoth 111 km.
Just a few kilometres from the Puy-en-Velay, this Trail des Sources is a monument to the sport. And whatever your route, you’ll run on trails, singletracks and forest paths, snow might well make an appearance in the cols and ridges, so be careful ❄️! The difficulty of the courses requires excellent physical conditioning since in autumn, in the mountains, you’ll climb up to 1700 m above sea level and sometimes in the semi-dark. As for the tracés (routes), they’ll be straight on, with the exception of the 111 km which will have you looping around Costaros. Speaking of which, it’s the legendary race, so we’ll tell you what to expect! You’ll first pass through the villages of Bessarioux, Fleurac and Goudet, then through the forest of Mézenc and the Tourte rock (we know the course might have you craving a slice, but no pie on the rock... sorry!). Next, Les Estables will lead you to Mount Mézenc before approaching the Col de la Clède via the Gerbier de Jonc ⛰️. Then you’ll tackle three sucs : Séponet, Montfol and Cherchemus before skirting the Issarlès Lake. Finally, you’ll pass through Arlempdes to finish your journey at Costaros, the finish location of all the races. 🏁
Once you’re done, we recommend the Puy-en-Velay greenway for a bike ride along a magnificent disused railway line, with tunnels and valleys, if you still have a little strength, of course. Regarding your gastronomic discoveries, you must absolutely try the unrivaled lentille verte du Puy and the fromage aux artisous, both accompanied by a Verveine du Velay as a drink (to be enjoyed in moderation, it’s not herbal tea). 😅
Want to recharge your energy? Then you’re in the right place! The Haute-GLoire is yours 💪!
Options & prices
(7)Prices are provided for information only — check the exact terms with the event organiser.
When
From Monday, November 9, 2026 to November 10, 2026
Select your stay dates
November 2026
December 2026
November 2026
Questions about this event
Answers to your questions
Trail des Sources de la Loire is a trail running event in Costaros over 111 km, taking place on Monday, November 9, 2026 through Tuesday, November 10, 2026. Find all the practical details — location, schedule and prices — directly on this page.
Trail des Sources de la Loire offers a distance of 111 km. Check the exact course details with the organiser, especially when several formats take place on the same day.
Trail des Sources de la Loire takes place at Costaros. You will find its exact location and links to Google Maps and Waze further down this page.
Trail des Sources de la Loire takes place from Monday, November 9, 2026 to Tuesday, November 10, 2026. Check the exact schedule with the organiser, as times may vary by category or format.
Trail des Sources de la Loire is free to enter, with no participation fee expected. This information may change, so check it with the organiser.
No participant limit has been provided for Trail des Sources de la Loire. The number registered through Goya is visible on this page, but this information may change. If in doubt, contact the organiser.
To take part in Trail des Sources de la Loire comfortably, plan training suited to trail running, wear appropriate clothing and bring any equipment recommended by the organiser.
Trail des Sources de la Loire is organised by Toutes les courses. For questions about the rules, access or accommodation, contact the organiser directly.
The weather forecast for the location and date of Trail des Sources de la Loire is available higher up on this page and is updated as the event approaches.
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Where the event takes place
Costaros, France
This event page is provided for informational purposes only to help users discover sporting events. Goya is not affiliated with, endorsed by, or sponsored by the organiser of this event or any associated brands unless explicitly stated otherwise. The information displayed is compiled from publicly available sources and may change at any time. Goya does not use any official logos, protected images, or other proprietary content belonging to the event organiser unless expressly authorised. Any names or trademarks mentioned are used solely for descriptive purposes to identify the event. For the most accurate and up-to-date information, including event details, rules, registration, entry fees, and official announcements, please visit the event’s official website.
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