The UTMB World Series returns to the Pyrenees this month as Trail 100 Andorra by UTMB takes over the parish of Ordino from Thursday 11 June to Sunday 14 June. The event has quickly established itself as one of the more scenic stops on the circuit, sending runners high into the rugged Andorran mountains across a programme that spans from a 10km introduction to a demanding 105km ultra.
The flagship Ultra 105K is the centrepiece, carrying Running Stones and qualifying status towards the UTMB Finals in Chamonix later in the season. Alongside it sit 80km, 50km, 21km and 10km options, a structure designed to draw both elite mountain specialists and the steadily growing field of recreational trail runners who travel to UTMB World Series events for the atmosphere as much as the result. The shorter distances have proved particularly popular as a gateway into the sport.
Andorra's terrain offers a stern test. Courses climb well above 2,000 metres through high alpine passes, technical singletrack and long, leg-sapping descents, with weather in the Pyrenees capable of shifting quickly even in mid-June. Race organisers have emphasised mandatory kit checks and cut-off discipline, a recurring theme across the World Series as participation numbers rise and the duty of care towards less experienced entrants grows.
The timing places Andorra in a congested stretch of the trail calendar. It falls a week before the Broken Arrow Skyrace at Palisades Tahoe and the Lavaredo Ultra Trail in Cortina on 24 June, while the Western States 100 looms at the end of the month. For athletes chasing points and form, the Andorran weekend is a valuable proving ground before the summer's marquee races, and several leading names are expected to use it as a sharpener.
For Andorra itself, the event is part of a broader push to position the principality as a year-round endurance-sport destination, building on its established reputation for mountain biking and altitude training. With a deep field across the distances and a course that rewards both climbing strength and descending nerve, Trail 100 Andorra looks set to deliver one of the more compelling trail weekends of the early summer.