Sea To Peak
📍 West to East across Brittany, Massif Central, and the Alps, France
gravelmtb
Date
18 July – 2 August 2026
Distance
2300km
Elevation
42,000 m
Difficulty
roadgravelmtb
OCS Pyrénées Ariégeoises
Occitanie, France · 5–7 September 2026
Difficulty: 5/5 — Brutal
This multi-day, self-supported cycling event explores the challenging mountain roads and gravel tracks of the Pyrénées Ariégeoises region in France. Riders can choose between 150km or 350km routes, both featuring significant elevation gain and remote, authentic terrain.
Visit official site →- Distances
- 350km · 150km
- Elevation
- 8,000 m
- Surface
- tarmac, gravel, singletrack, dirt
- Typical W/kg
- 2.8–3.8
Rider fit
Who it's for
This adventure is ideal for experienced cyclists seeking a physically demanding and mentally rewarding challenge in a wild, natural environment, with a strong emphasis on self-sufficiency and exploration.
Who will struggle
Beginners or riders unprepared for sustained climbs, technical singletrack, long distances without assistance, and variable mountain conditions will find this event extremely challenging.
Training focus
Training should focus on long-distance endurance, climbing power with a transmission adapted to steep gradients, bike handling skills for diverse off-road terrain, and developing self-sufficiency for remote rides.
Are you ready for this race?
Compare your W/kg to see how you stack up against this race's typical level — and which races fit you best right now.
FAQs
What are the available distances and elevation gains?+
The event offers two routes: a 150 km loop with 3,000 meters of elevation gain, and a 350 km loop with 8,000 meters of elevation gain.
What type of terrain can riders expect?+
Riders will encounter diverse terrain including remote, often steep mountain roads, forest tracks, and undulating, technical singletrack through valleys, plateaus, and deep forests.
What types of bikes are recommended or permitted?+
For road sections, a road bike with a minimum of 25mm tubeless tires is recommended. For gravel, a gravel bike with 40-47mm tubeless tires for comfort and grip is advised. Mountain bikes are also permitted, but e-bikes are prohibited due to battery autonomy and weight constraints.
What is included in the registration fee?+
Registration includes a road book, access to a WhatsApp group for updates, GPX file (sent 3 days prior), a GPS tracker, live tracking platform access, welcome gifts, a pre-race technical briefing, finisher gifts, and a post-race meal.
What is NOT included in the registration fee?+
The fee does not cover transport, accommodation, or full meals before, during, or after the event. Participants are responsible for these logistics, though organizers can assist with accommodation in advance if needed.
What are the start times for each route?+
The 350 km route starts on Saturday, September 5, 2026, at 8:00 AM. The 150 km route starts on Sunday, September 6, 2026, at 8:00 AM. The maximum arrival time for all finishers is Monday, September 7, 2026, around 12:00 PM.