Six weeks out from the gun, attention in the ultra-running world is already turning to Chamonix, where the 23rd edition of the HOKA UTMB Mont-Blanc will run from 24 to 30 August as the season-closing final of the UTMB World Series. The tri-country week, spanning France, Italy and Switzerland across a card of races from 15km to the full 174km loop, remains the sport's most complete test of range, altitude and attrition, and organisers expect roughly 10,000 runners across the week's various start lines.
The flagship UTMB itself sets off from Chamonix town centre on the Friday evening at 17:45, sending the field on a course with well over 9,000 metres of elevation gain through some of the most photographed high mountain terrain in Europe. Qualification now runs almost entirely through the World Series structure, with a top-three finish at a standard Series event or a top-ten placing at one of the Series Majors earning direct entry, a system designed to reward in-season form over accumulated lottery points.
Kilian Jornet's name is again on the entry list, part of a self-imposed 2026 sequence that also takes in Western States and Sierre-Zinal, and the Norwegian-based Catalan has been explicit that these are simply "the races where everybody shows up." His participation, following a summer racing at altitude and on varied terrain, sets up a dynamic showdown with the current generation of American and European mountain talent who have chipped away at his course-record-holding legacy in recent seasons.
The supporting races carry weight of their own. The CCC operates as the World Series 100km final over a shortened but still brutal 101km from Courmayeur, while the OCC serves as the 50km final from the Swiss village of Orsieres, both funnelling into Sunday's finish line on the track in Chamonix. Depth across every distance has become the defining feature of UTMB week in recent years, and organisers say this edition's entry lists are among the strongest assembled since the Series format was introduced.
The build-up follows a dramatic fortnight in North American ultra-running, with Ludovic Pommeret and Courtney Dauwalter both breaking course records at Hardrock 100 in Colorado, even as wildfire smoke forced the cancellation of nearby races. That form line, along with the usual late-summer jostling for qualifying places, means the coming weeks of buildup to Chamonix are likely to be as closely watched as race week itself.