UTMB Chamonix Festival Guide: Plan Your Trip

Understanding the Event: More Than One Race

The event now goes by UTMB Mont-Blanc, covering all the races that finish in Chamonix, not just the original UTMB. The smaller races, which include the CCC, OCC, and PTL, offer different distances and challenges, attracting both elite athletes and weekend trail runners. Each race has its own character and draws its own enthusiastic crowds.

Because it is a festival rather than a single sporting event, planning is different. The official UTMB pages list all the upcoming races and their categories, whether you aim to run or just want to know the schedule. For those new to the scene, the acrostic race names can be confusing, but they all refer to the villages and mountain routes they follow.

Race Categories: UTMB, PTL, MCC, TDS, YCC, ETC, OCC, CCC

The marquee UTMB race circles the Mont-Blanc massif over roughly 170 kilometers with about 10,000 meters of elevation gain. Runners have about 45 hours to complete the course, which passes through Italy and Switzerland. Because of the logistics and qualification requirements, many participants begin training years in advance. A detailed description of the course and its start waves appears on the official event page.

The other races each have their own identity. The PTL is a team event over rough, unmarked terrain that can span almost 300 kilometers. The MCC and ETC are shorter races that start in Martigny and Courmayeur, respectively. YCC is designed for juniors, while the TDS, OCC, and CCC offer distances from roughly 15 to 150 kilometers, with starts in Courmayeur, Orsières, and other mountain towns.

Many of these shorter races serve as stepping stones to the full UTMB. The CCC, for example, follows the final half of the UTMB course and is often used by runners to gain experience. For spectators, each race provides a different viewing experience, from the mass start of UTMB to the more intimate atmosphere of the early morning OCC.

For runners who want to register, each race has its own entry conditions, with some requiring qualifying races and others operating on a lottery. These requirements vary by year, so it is essential to review the current rules. Runners typically accumulate points from other events to qualify. To understand the point system and how to earn entry, check the details on UTMB qualifying races and running stones.

General Week Schedule: What Happens When

The festival begins on the Monday of the final week of August. In past editions, the PTL and MCC kicked off on that first day, with the TDS following that evening. Later in the week, races like the OCC, CCC, and the main UTMB start, with the final finishers coming in late Sunday or early Monday.

The exact schedule for each edition is not published until close to race week, so anyone planning around specific races should check the official UTMB website under the race or schedule sections. Organizer announcements also go out to registered runners and media contacts, and local tourism offices often publish a general overview.

Because the schedule can shift slightly from year to year, visitors should be cautious about relying on past dates. A general rule is that the main UTMB start and the CCC both fall on Friday, with the UTMB leaving late in the evening to create a dramatic night-time departure. All times are local to the start town, so be mindful of cross-border travel times.

Race Start and Finish Locations

All races finish in the center of Chamonix, near the Saint Michel church, where a large arch and grandstands are set up for the occasion. Some races, such as the MCC and the OCC, start in Switzerland, in towns like Martigny and Orsières. Others, including the TDS and CCC, start in the Italian town of Courmayeur. Only the UTMB itself starts in Chamonix.

For spectators, these starts are a key part of the experience. The mountain town starts offer close access to runners and often have their own small ceremonies. But they require travel across the border, which adds time to any viewing plan. The Chamonix start, in contrast, is a massive street party that is easy to join even without a car.

The Ultra-Trail Village and Community Events

During race week, the Ultra-Trail Village, an expo of exhibitor chalets, opens in the center of Chamonix. Here, running brands, nutrition companies, and nonprofit organizations present their latest gear and host festival-goers. This is a hub for meeting athletes, joining shake-out runs, and trying new products. Past events have included live music and food stalls late into the evening.

Besides the expo, many brands and local groups organize free community runs, film screenings, and talks about trail running and the mountains. These are often announced in the weeks before the event, so travelers should search for updates from the organizer or the Chamonix tourism office. Attendance is generally open to everyone, not just registered racers.

For those wanting to see the wider Chamonix arts scene, other festivals may run in the same period, such as the Chamonix Mountaineering Festival or the Cosmo Jazz Festival. These are separate events with their own schedules, but they add to the summer atmosphere.

Spectator Access: Viewing Spots and Logistics

The finish line in Chamonix is the most accessible spectating point, but it is also the busiest. Arrive early to secure a spot along the barriers, especially for the first finishers or the Friday evening start of UTMB. Many fans also head to the mountains to watch runners pass through aid stations and viewpoints along the course.

To make accessing these far-flung viewing areas easier, the race organization and public transit add additional buses and trains during the week. Driving is discouraged because of road closures and highway parking. Check the official site's transport section before you go, and even if a location is only a few kilometers away, expect delays.

Since many races go on for hours or days, planning a spectating route is part of the fun. Watching the start in Chamonix and then driving to a spot further along the course is common, but requires careful timing. Use the live tracking on the official website to follow your favorite runners and plan when to move.

Travel and Transportation Tips

The main international access points to Chamonix are Geneva airport in Switzerland and Italian airports like Milan. From Geneva, a scenic bus or train ride of about an hour brings you to the valley. Chamonix is also a stop on the Mont Blanc Express train, which connects it to towns in Switzerland.

Once in town, the local bus system, called the Chamonix Bus, offers frequent service between the villages of the valley. It becomes more frequent during the festival, yet still can be overwhelmed at key race times. If you are staying outside the central town, verify bus times in the evening, since service may end before the last race activities.

Long-distance drivers should plan ahead for parking restrictions in the center. A good alternative is to book a hotel with a garage outside the town center and use public transit or walk for the rest of your trip.

Where to Stay in Chamonix

Chamonix accommodates far more visitors than usual during race week, and it is wise to secure places to stay well in advance. The main options are in downtown, near the race village, or in the smaller villages that line the valley, such as Les Houches, Argentière, and Servoz. Each offers a different balance of convenience and quiet.

Because the event reaches into Italy and Switzerland, many spectators choose to base themselves in the less crowded towns on the other side of the mountain, such as Courmayeur, and commute to Chamonix for the finish. This works best for those with a car or looking for a quieter vacation.

Accommodation prices are seasonal, so check rates directly with the hotels and hosts. Since availability is limited, travelers should consider booking as early as possible and using flexible rates that allow for changes in their plans.

Packing and Preparation for Spectators

Sensible shoes are the most important thing to bring if you intend to hike to a viewpoint or stand for hours at the finish line. The weather in the Alps can change quickly, so layers are essential even in summer. A waterproof jacket, a warm hat, and gloves are useful year-round at altitude.

Carry extra food and water, since line-ups at convenience stores grow long around race times. Sunscreen and a hat are essential in the summer sun, and sunglasses protect your eyes on the bright snowfields visible from town. A headlamp is required if you will follow the race after nightfall.

For those planning to cheer on runners along remote course sections, a printed map or a downloaded offline map is necessary, because mobile signal is weak in the mountains. Check whether your accommodation provides a secure place for your valuables while you are out.

Tips for First-Time Visitors

If this is your first UTMB, do not underestimate the crowds. The streets of Chamonix are busy from morning until late night, with many visitors just there to enjoy the atmosphere. Eat early or make reservations if you want to dine in the popular restaurants. For groceries, consider shopping in the supermarkets outside the center or in nearby Sallanches.

Mornings are quiet and are the best time to have the mountains to yourself. Walk along the river or ride the cable cars for views of the Mont Blanc massif. Afternoon traffic builds as events start; use that time to visit the expo village.

Do not miss the race finishes in the evening, when crowds and lights create a festive mood. Live screens broadcast the action for those who cannot get close. Remember that many runners finish at night, so check the leaderboard to see who is approaching.

To properly understand how to see the athletes and where to stand, read a detailed spectator guide with finish-line tips and course viewpoints.

Plan Your Visit

UTMB week is a celebration of trail running, set against one of Europe's most dramatic backdrops. Whether you are a devoted fan, an aspiring runner, or just someone who enjoys lively festivals, there are plenty of ways to be part of the action. With a little planning, you can make the most of the races, the expo, and the mountain setting.

Start by checking the official UTMB website for the latest race schedule, course updates, and transport information. Then book your accommodation early and make a rough plan for where to watch the races. If you are considering running one of the races in the future, a weekend as a spectator can inspire you and help you understand the distances and climbs involved.

For more planning inspiration, explore our guide to the best of the event, from qualifying races and insider tips to other mountain festivals.