Spring Trail Series by Ultra X

Haslemere, United Kingdom • 18 Apr 2026

Spring Trail Series - Ultra X

The Spring Trail Series takes place on 18 April 2026 within the South Downs National Park. The event is centered at the Cowdray Estate in West Sussex, specifically near the Cowdray Farm Shop in Midhurst. The routes utilize the Serpent Trail, featuring a landscape of greensand hills, rivers, woodland, and lowland heath.

The event is designed with a central event village where all participants start and finish at the same location. This village includes an expo area with merchandise, food, and hot drinks. On-site parking is available for participants. For those wishing to stay overnight, camping pitches for Friday and Saturday nights can be purchased during the registration process.

There are five different distances available to participants:

  • 110 km
  • 50 miles
  • 50 km
  • 25 km
  • 12 km

The courses are fully marked, and medical support is provided throughout the duration of the race. Fully stocked aid stations are positioned along the routes. Participants receive a finisher's medal, and those competing in the 110 km distance have access to a GPS tracker and a drop bag service to a midway point. The event features relaxed cutoff times, averaging over two hours to complete each 10 km section between checkpoints. Some distances are UTMB World Series Indexed races (100K, 50K, and 20K categories). Visit the organization's website for the most recent information.

Race information

UTMB 20K UTMB 50K UTMB 100K
110 km
110km
50 mi
50 Miler
50 km
25 km
12 km
Visit the organization's website for the most recent information.
Trail runs nearby

A single-loop 50 km trail race around the South Downs, starting and finishing in Arundel. Mostly trail with about 3,000 ft ascent, four aid stations, live GPS tracking and UTMB Index status worth 2 ITRA points.

UTMB Index

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Take on the Gauntlet Treasure Run along a flat riverside towpath in Walton on Thames, doing laps of a 5.3 km out and back to build any distance from 5k to ultra within seven hours. Limited places and every finisher gets a medal.

Enjoy a flexible 7 hour time challenge along the scenic River Thames at Runnymede. Choose your own distance from 3km to ultra marathon and earn a unique Easter egg medal and goody bag.