Does more UTMB experience really lead to better results?

Late August every year belongs to Chamonix,August 24–30, 2026this small town beneath the Alps once again steps into the spotlight,the 23rd HOKA UTMB Mont Blanc is poised to begin, and the world’s top trail runners are set to face off.

The race organizers previously released the elite lists for the three main races (UTMB, CCC, OCC),a total of 385 athletes, who together have 774 appearances in Chamonix。

Behind these appearances: how many are making their debut? How many are “regulars”? What other data deserve a closer look?

Elite athletes across the three races

How large is the experience gap in Chamonix?

UTMB field: 123 elites, averaging 3.01 appearances in Chamonix per person;

CCC: 115 athletes, averaging 1.98 appearances;

OCC: 147 athletes, averaging just 1.20 appearances.

In other words,UTMBthe majority at the starting line are “familiar faces,”of the 123 elites, only 17 (13.8%) are making their debut, and 33 (26.8%) have five or more appearances。

The shorter the course, the more new faces. Nearly half of the OCC field have never set foot on this course,among the 147 OCC elites, 65 are making their Chamonix debut (44.2%); the CCC debut rate is 25.2%.

The longer the distance, the higher the “risk” appears to be; these elites’ historical finish data also underline the point.

This year’s UTMB elites have a combined 370 appearances in Chamonix, of which 115 ended in DNF, a dropout rate of 31%meaning roughly one in three has previously dropped out mid-race in Chamonix,In the CCC field there were 228 starts with 62 DNFs (27%), while the OCC field had 176 starts with only 33 DNFs (19%).。

Runners in the UTMB field are the most experienced, but they also have the highest DNF rate.174 km and nearly 10,000 meters of ascent mean that even ten previous runs on this course don't guarantee the eleventh will go smoothly. Experience helps reduce mistakes, but it can't eliminate the "unexpected."

The OCC group's 60 km distance leaves more margin for error. Looking at the OCC women's elite list, you'll find many top-ranked athletes come from orienteering, mountain running, or road marathons and have no prior race experience in Chamonix.

The most representative example is "Swedish orienteering queen" Tove Alexandersson (Index 859). She holds multiple world titles in orienteering and mountain running, and is making her Chamonix debut — the biggest unknown in that field. Molly Seidel (Tokyo Olympic marathon bronze medallist) and Lauren Gregory are also "high Index, zero Chamonix experience."

Some counterintuitive data

1. A high Index score doesn't guarantee a high completion rate or a top placing

The UTMB Index is the organisers' core metric for selecting elites — essentially a ranking of athletes' cumulative performances across the global UTMB event system. Logically, the higher the score, the stronger the runner and the more likely they are to finish.

But when comparing the Index scores of 385 athletes with their historical completion rates in Chamonix, one finds:A number of top-ranked Index athletes have blank completion records in Chamonix, or even only DNFs.。

Remi Bonnet is a typical example. In the OCC men's field he has Index 956, placing him among the elites. But his Chamonix record is:Two starts, two DNFs: 2021 OCC, DNF; 2024 OCC, DNF.

Riley Brady is the same. In the UTMB women's field she has Index 826, higher than 2025 champion Ruth Croft (822). But her only Chamonix start was the 2024 CCC, which ended in a DNF.

More than 20% of athletes in the top 10% of Index rankings have historical completion rates in Chamonix below 50%.

The Index measures athletes' overall performance across global events, but courses differ in surface, climate, altitude and ascent profile. Chamonix's courses have their own selection logic — they don't just measure how strong you are, but whether your skillset matches the course's characteristics.

2. Multiple championship titles don't necessarily imply greater consistency

Winners are clearly talented, but does that make them more consistent? Sometimes not.

Jim Walmsley, 2023 UTMB champion and a leading figure in American men's trail running. His Chamonix record: 7 starts, 4 finishes, 3 DNFs. The three DNFs (2018, 2021, 2024) appear alongside his 2023 victory on his record.

Baptiste Chassagne, without an UTMB title and far less famous than Walmsley, has 6 starts in Chamonix and 6 finishes. Starting with 4th in the 2018 MCC, he progressed through OCC and CCC to 10th in the 2023 UTMB and then runner-up in the UTMB field in 2024 — each step solid and uninterrupted.

"Championship pedigree" and "finishing resilience" seem to be two distinct ability dimensions in the UTMB context.

3. Changing categories isn't "promotion/relegation"

In most sports, "moving up" usually means an increase in ability — from youth squads to first teams, from lower leagues to top leagues — a natural progression.

But in UTMB's elite selection logic, choosing a category isn't about "leveling up" to tackle tougher races — it's a matter of choice.

This year's UTMB features two classic "reverse" choices:

Italian Francesco Puppi — 2023 OCC champion, 2024 OCC runner-up, 2025 CCC champion. By a "move-up" logic he might have been expected to challenge the UTMB category in 2026. Instead he chose to "step down" and return to OCC.

Duoji (多吉) placed fourth in the UTMB category in 2025 — the highest finish by a Chinese male elite in the UTMB field. This year he entered CCC, opting for the relatively shorter distance.

Francesco Puppi has won both OCC and CCC; he knows better than anyone which event suits him. Duoji ran to fourth in UTMB, but CCC is a completely different challenge.

For example, Toni McCann, who won the women's OCC in 2023 and CCC in 2024,has said bluntly that OCC puts more pressure on her, leaving almost no opportunity to catch her breath during the race.

These cases are not isolated: two-way movement between CCC and OCC is most frequent. UTMB runners rarely drop down to OCC, but they will step down to CCC.

It's easy to understand why: speed-oriented OCC runners want to prove they can do more than short distances and move up; endurance-focused UTMB runners want a breather and move down. The two groups collide in CCC, making it the most "mixed" field of the three events.

Group characteristics in the data

1. Female elites make up nearly half

Across the three main categories,the maximum difference in the share of female elites is only 1.7 percentage points: UTMB 46.3%, CCC 45.2%, OCC 46.9%, for an overall share of 46.2%.

The male-to-female elite ratio is 5.4:4.6, almost a 50/50 split.

2. National distribution of elite athletes

Among elites across the three UTMB categories this year, the United States (77) and France (63) form the two main blocs; Spain (40) and China (32) rank third and fourth,with the number of Chinese elite athletes exceeding those from Italy (24) and the UK (20).。

This is no coincidence; the UTMB World Series' expansion in the Asia-Pacific—races in Thailand, Australia, and domestic events in China—has given China's trail elites valuable major-race experience.

At the end of August, when the starter's gun fires in Chamonix, those figures will be rewritten again.

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#Which Chinese elite athlete's performance are you most looking forward to#

Writer/Editor: Pao Ye / MP

Image source: Paoye Da Baozha

Visuals: Max