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About the UTMB World Series

Embark on an extraordinary journey with the UTMB World Series, shaped by the specificities and values of trail running.

The ultimate global trail running World Series

Uniting the sport’s biggest stars and amateur runners through the best, leading international events in the most stunning locations, the UTMB World Series gives all trail runners the chance to experience the UTMB adventure across the world, with more than 30 events taking place across Asia, Oceania, Europe, Africa and the Americas in 2023. It is the only place where runners can begin their quest to UTMB Mont-Blanc, where the prestigious UTMB World Series Finals will be held.

The UTMB World Series integrates three levels of event:

  • UTMB World Series Finals
  • UTMB World Series Majors
  • UTMB World Series Events
The ultimate global trail running World Series

UTMB World Series Finals


Held in the three key distances of the UTMB Mont-Blanc: the OCC (50K), CCC (100K) and UTMB (100M).

To enter the UTMB Mont-Blanc lottery and qualify for a place at the Finals, you must have at least 1 Running Stone. You can only collect Running Stones by finishing a UTMB World Series Event or UTMB World Series Major.

Elite athletes will be rewarded for their performance with direct access.

UTMB World Series Majors


Three UTMB World Series Majors are held each year and these pinnacle events across the Americas, Europe and the Asia-Pacific region.

Collect double the amount of Running Stones compared to other UTMB World Series Events for the UTMB World Series Finals lottery.

In total 225 runners are also granted automatic qualification for the UTMB World Series Finals through each Major. This includes age-group category winners and the top 10 male and female runners in the 100M, 100K and 50K categories.

The Canyons Endurance Run by UTMB, Val d’Aran by UTMB, Doi Inthanon Thailand by UTMB are respectively the American, European and Asia-Pacific Majors.

UTMB World Series Events


The best trail running events on the planet organized to the highest quality standards in the most stunning locations.

Collect Running Stones which are mandatory to enter the UTMB World Series Finals lottery.

The top 3 male and female finishers in the 50K, 100K and 100M categories automatically win their place at the Finals.

With 34 events across the Americas, Europe, Asia, Africa, and Oceania, plan your 2023 season and choose your next UTMB World Series adventure.

Running Stones

Collecting Running Stones is the only way to access the UTMB World Series Finals for regular runners.

What is a Running Stone?

What is a Running Stone?

A Running Stone is an entry into the lottery to participate in the UTMB World Series Finals: the UTMB, CCC and OCC races of the UTMB Mont-Blanc.

Only 1 Running Stone acquired in the past two years is mandatory to enter the lottery. Running Stones are cumulative, have no expiration date, and each Running Stone gives you an additional chance to be drawn.

How do I earn Running Stones?

You can only collect Running Stones by finishing races in the 20K, 50K, 100K or 100M category at a UTMB World Series Event or UTMB World Series Major.

Discover the 34 events that will allow you to collect Running Stones in 2023 to enter the UTMB Mont-Blanc lottery.

20K
50K
100K
100M

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UTMB Index

Only accessible on this website, the UTMB Index provides the performance level of each runner.

What is the UTMB Index?

What is the UTMB Index?

Assessing the performance level of each trail runner, the UTMB Index is calculated for each of the 4 UTMB World Series race categories: 20K,50K,100k and 100M. Trail runners are also given a General UTMB Index calculated by combining results from all race categories.

A valid UTMB Index is mandatory to enter the UTMB Mont-Blanc lottery.

Consult your UTMB Index

How do I get a valid UTMB Index?

A valid UTMB Index is achieved by completing at least one race of the UTMB World Series or a UTMB Index race in the relevant category within the previous 24 months. Once a race category has at least 1 valid result, all races from the past 36 months will be used to calculate your UTMB Index.

To enter the UTMB Mont-Blanc lottery for the race of your choice, you must have a valid UTMB Index as per the chart.

How do I get a valid UTMB Index?

Race Categories

There are 4 UTMB World Series race categories including 20K, 50K, 100K and 100M.

The most accessible format


Perfect for outdoor enthusiasts looking for a first trail running experience or for trail runners who want to challenge themselves or train on short distances.

The challenging adventure


Fans of medium distances ranging between 50 and 100 km-effort, the 50K category is for you! The Finals of the 50K category will be held each year at the OCC race of UTMB Mont-Blanc.

The pathway to ultra endurance


A unique way to test yourself over 100 km-effort and experience a full day on the trails, with the epic CCC race of UTMB Mont-Blanc becoming the Finals of the 100K category.

The mythical distance


Push your limits and achieve the ultimate trail running dream of completing a race of over 170 km-effort. The pinnacle UTMB race of UTMB Mont-Blanc becomes the Finals of the 100M category.

Kilometer-Effort (km-effort)

The 4 race categories are based on the km-effort, a globally recognized formula for measuring the race distance in trail running by considering both the distance and elevation gain to calculate the perceived distance.

The km-effort is calculated by adding 1km to the race distance for every 100 meters of elevation gain.

For example, a race of 50km and 2,500 meters of elevation gain has 75 km-effort.

Kilometer-Effort (km-effort)

Elite runners

Under the new sports system, elite runners must qualify for the UTMB World Series Finals.

Qualification for elite runners

Qualification for elite runners

To gain access to the UTMB World Series Finals, the best athletes on the planet must qualify by taking part in the UTMB World Series Majors or UTMB World Series Events races.

The first 10 men and women on the UTMB World Series Majors, as well as the first 3 men and women on the UTMB World Series Events in each of the 50K, 100K and 100M categories, will win a place at the UTMB World Series Finals in the equivalent category.

Elites benefit from advantages at all the UTMB World Series Events and can also benefit from the UTMB World Series Support Program.

TRAIL : Dacia X UTMB® World Series
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