Ultra X Spring Trail Series
The Ultra X Spring Trail Series on 18 April 2026 includes a 12km, 25km, 50km, 50 miler and 110km trail run on the Serpent Trail in West Sussex.
This is a stunning route that weaves through the greensand hills, rivers, woodland and lowland heath of the South Downs National Park. It is a habitat which is rarer than rainforest and home to a variety of rare and endangered species.
The courses are fully marked with fully stocked aid stations along the way.
This is a UTMB World Series Indexed race (100k, 50k and 20k categories).
Organiser
Distances/Events
12K
25K
50K Ultra
50 miles Ultra
110K Ultra
Source: https://www.runningcalendar.co.uk/event/ultra-x-spring-trail-series/
Event Website: https://ultra-x.co/event/spring-trail-series/
Coordinates: 50.9946389, -0.7260944