When packing your race pack for the UTMB®, your choice of footwear is paramount. It is easily the most critical piece of trail running gear, and you must be completely accustomed to the model you will wear. Here are our key criteria for choosing the right trail shoes.
Technical features to look for
The UTMB® is a long-distance race, and the weight of your footwear will be crucial as the miles add up: every excess gram accumulates and causes fatigue. Cushioning is also vital to absorb repeated impacts on rugged terrain over long hours, without sacrificing foot placement precision on technical descents. Drop—the height difference between heel and forefoot—influences your stride: a low drop puts more strain on the calves and Achilles tendon, while a higher drop accommodates heel strikes and relieves that muscular chain. The right drop is the one you are already used to: an ultra is not the time to switch. Finally, the grip must match the UTMB® terrain, from technical singletracks and roots to rocky sections at high altitude.
To explore stride mechanics and drop in more detail, read our guide: by the way, what is heel-to-toe drop?
A dedicated trail shoe
Manufacturers have made major strides in shoes designed specifically for trail running, combining grip, responsive cushioning and lightweight performance. At Cimalp, our line-up includes the X-RACE with a Vibram Megagrip outsole, aggressive grip and precise heel lock for technical terrain and fast transitions, and the X-TRAIL with a Vibram XST outsole, lighter and more versatile, featuring a flexible platform that conforms to uneven ground.
Do not underestimate the value of investing in a truly technical trail shoe a few months before the event. Explore our selection of trail running shoes.
Breaking in your shoes properly before the race
Get used to your shoes over the months, wearing them on long runs and on terrain similar to the UTMB® (elevation gain, technical ground). Allow at least several weeks, ideally a few months, to ensure optimal comfort, zero friction points and a smooth stride adaptation to the chosen model. Never start on race day with a brand-new or barely tested pair.
Pack a spare pair and recovery shoes
Do not forget to pack a spare pair of shoes in case of an issue with your main pair. It is also helpful to have a comfortable pair at the start line for the waiting period before the off, as well as a recovery pair or slides at the finish to let your feet breathe and aid recovery. Pack these in your drop bag that stays on site and does not travel with you during the race.
Frequently asked questions
What drop should you choose for the UTMB®?
The one you are already used to. Changing your drop requires several months of muscular and tendon adaptation: it is not something to attempt in the weeks leading up to an ultra.
How long before the race should you break in your shoes?
Allow at least several weeks, ideally a few months, testing them on long runs and terrain similar to the UTMB®.
Do you strictly need a spare pair of shoes?
It is not mandatory by race rules, but strongly recommended in case an issue arises with your main pair during such a long event.
Find out more
- Packing your race pack for the UTMB®
- Essential accessories for the UTMB®
- The ideal outfit for the UTMB®
Photo credits: Clément Dumas.
