The Ultra Tour des 4 Massifs (UT4M) 2025, taking place from 17 to 20 July 2025 in Grenoble, France, is a premier trail running event that traverses the four majestic massifs surrounding the city: Vercors, Taillefer, Belledonne, and Chartreuse. With 12 distinct race formats ranging from 9.2 km to 180 km, the event accommodates a wide spectrum of runners, from novices to seasoned ultramarathoners. Notable races include the UT4M 180 Xtrem (180 km with 11,686 m of elevation gain) and the UT4M 100 Master (96.6 km with 6,000 m of elevation gain), both demanding significant endurance and skill. For those seeking a more gradual challenge, the UT4M 80 Challenge offers four consecutive days of approximately 20 km stages, each highlighting a different massif. The event is renowned for its breathtaking alpine scenery, technical trails, and the vibrant community of over 800 volunteers supporting more than 4,000 runners.
Races
180 km
180 km
100 km
80 km
50 km
50 km
40 km
40 km
20 km
20 km
20 km
Race Date:
19 July, 2025
Scheduled for July 19, 2025, the Ut4M 100 Master starts in Uriage-les-Bains and features 96.6 km with 5,894 m of climbing. Organized by Grenoble Outdoor Aventure, it delivers a highly technical mountain run through Belledonne and Chartreuse, ideal for experienced ultrarunners.
Weather based on historical averages.
FAQs
What is the Ut4M 100 Master?
How long is the Ut4M 100 Master?
Where does the Ut4M 100 Master take place?
What is the elevation gain of the Ut4M 100 Master?
How can I prepare for the Ut4M 100 Master?
How do I choose the right training plan for the Ut4M 100 Master?
Scheduled for July 19, 2025, the Ut4M 100 Master starts in Uriage-les-Bains and features 96.6 km with 5,894 m of climbing. Organized by Grenoble Outdoor Aventure, it delivers a highly technical mountain run through Belledonne and Chartreuse, ideal for experienced ultrarunners.
The Ut4M 100 Master is 96km long.
The Ut4M 100 Master takes place in Grenoble, Isère, France.
The Ut4M 100 Master elevation gain is 5894 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!
What is the Ut4M 100 Master?
Scheduled for July 19, 2025, the Ut4M 100 Master starts in Uriage-les-Bains and features 96.6 km with 5,894 m of climbing. Organized by Grenoble Outdoor Aventure, it delivers a highly technical mountain run through Belledonne and Chartreuse, ideal for experienced ultrarunners.
How long is the Ut4M 100 Master?
The Ut4M 100 Master is 96km long.
Where does the Ut4M 100 Master take place?
The Ut4M 100 Master takes place in Grenoble, Isère, France.
What is the elevation gain of the Ut4M 100 Master?
The Ut4M 100 Master elevation gain is 5894 metres, which Runna classifies as a Hilly race.
How can I prepare for the Ut4M 100 Master?
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!
How do I choose the right training plan for the Ut4M 100 Master?
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!
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Sport:
Running
Tags:
Nature
This event listing is for informational purposes only. Runna is not affiliated with, endorsed by, or sponsored by Ultra Tour des 4 Massifs 2025 or Grenoble Outdoor Aventure. 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 Ultra Tour des 4 Massifs 2025 website.
