Spring Trail Series by Ultra X

Haslemere, United Kingdom • 18 Apr 2026

The Spring Trail Series by Ultra X is a trail running event held at the Cowdray Estate in Surrey, within the scenic South Downs National Park. The series features five race distances: 12km, 25km, 50km, 50 miler, and 110km, all set along the picturesque Serpent Trail that traverses greensand hills, rivers, woodlands, and lowland heath. Designed for accessibility, all races start and finish at the same location near Cowdray Farm Shop, which offers amenities for spectators. The course is rated low in technical difficulty (1/5), with relaxed cut-offs encouraging an adventurous experience. The event includes fully marked routes, aid stations, medical support, and camping options, making it welcoming for runners of various levels. Visit the organization's website for the most recent information.

Race information

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