The 10th edition of Les Courses du Mont-Terrible takes place on April 18–19, 2026, combining competitive challenge with the beauty of the Jura mountains. This event offers eight routes—5 km, 9 km, 15 km, 23 km, 36 km, 50 km, 70 km, and the demanding 106 km Ultra—featuring dirt paths, forest trails, gravel climbs, and steep descents. The 70 km Trail de Calabri boasts around 3,600 m of vertical gain, while the Ultra covers nearly 5,000 m D+ over two stages. With certified routes, dramatic scenery, and the prestige of serving as the Swiss Trail Running Championships, it draws elite athletes and passionate trail runners alike. Every race offers a unique balance of athletic endurance, scenic immersion, and Swiss mountain culture.
Race Date:
19 April, 2026
Also on 19 April 2026, the 5.6 km La Tchouatte provides a scenic and accessible introduction to trail running, blending forest paths with gentle elevation.
Weather based on historical averages.
Also on 19 April 2026, the 5.6 km La Tchouatte provides a scenic and accessible introduction to trail running, blending forest paths with gentle elevation.
The La Tchouatte 5km is 5km long.
The La Tchouatte 5km takes place in Fontenais, Canton of Jura, Switzerland.
The La Tchouatte 5km elevation gain is 133 metres, which Runna classifies as a Hilly race.
The best way to train for the next race is to use a personalised training plan that takes into account your current running ability, schedule, and preferences.
This will help you steadily improve your running performance and get ready for the race without risking an injury.
Check out our training plans to find the best running program for your goals!
Which plan you choose will depend on your experience, schedule, objectives, and the date of the race.
Runna offers personalised training plans for every runner and every goal: Whether this is your first, 10th or 100th race, we'll help you get the most out of your training and smash your goals.
Check out our training plans to find the best running program for your goals!
Also on 19 April 2026, the 5.6 km La Tchouatte provides a scenic and accessible introduction to trail running, blending forest paths with gentle elevation.
The La Tchouatte 5km is 5km long.
The La Tchouatte 5km takes place in Fontenais, Canton of Jura, Switzerland.
The La Tchouatte 5km elevation gain is 133 metres, which Runna classifies as a Hilly race.
The best way to train for the next race is to use a personalised training plan that takes into account your current running ability, schedule, and preferences.
This will help you steadily improve your running performance and get ready for the race without risking an injury.
Check out our training plans to find the best running program for your goals!
Which plan you choose will depend on your experience, schedule, objectives, and the date of the race.
Runna offers personalised training plans for every runner and every goal: Whether this is your first, 10th or 100th race, we'll help you get the most out of your training and smash your goals.
Check out our training plans to find the best running program for your goals!
Running
Nature
This event listing is for informational purposes only. Runna is not affiliated with, endorsed by, or sponsored by Les Courses du Mont-Terrible 2026 or Club d’Athlétisme de Fontenais. All event details are based on publicly available information and are provided solely to help users discover running events. Runna does not use any official logos, images, or proprietary content from this event or its organiser. Any trademarks or names mentioned are used descriptively to identify the event in a factual manner. For the most accurate and up to date information (including to register or purchase an entry to the event), please visit the Les Courses du Mont-Terrible 2026 website.