21km
Distance
350m
Elevation D+
2025
Latest Edition
Get Your Predicted Finish Time
Use our predictor tool to estimate your finish time based on your UTMB Index and data from 7 finisher records.
Open Time Predictor🌍
Racing in France?
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Hotels near Ultra Trail La Ligne Rouge Trail La Ligne Rouge La Botte 20km
Book accommodation near the start
Agoda
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Flights to France
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Gear up for your 21km race
👟
Trail Shoes
Trail shoes with good grip are essential. Salomon and Hoka offer reliable all-round performance.
via Amazon
🎒
Hydration Vest
Essential for carrying water and nutrition. Salomon ADV Skin vests are popular for good reason.
via Amazon
⚡
Nutrition & Gels
Energy gels provide quick fuel when you need it. Take one every 30-45 minutes during longer efforts.
Maurten Gel 100 (12-pack)
€35-45
SiS Beta Fuel Gel (6-pack)
€18-25
Tailwind Endurance Fuel (50 serv)
€35-45
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