Three Forts Challenge

Worthing, United Kingdom • 3 May 2026

The Three Forts Challenge is a renowned trail running event held in West Sussex, starting and finishing at Lancing Manor Leisure Centre. It offers three race options: a full marathon (27.2 miles), a half marathon, and a 5-mile trail run. The courses feature demanding terrain with steep climbs, stiles, and rough tracks through the scenic South Downs National Park, passing historic landmarks like Chanctonbury Ring and Cissbury Ring. The event welcomes runners of all levels, including those running with dogs under Canicross rules. Profits support the Ferring Country Centre and other local charities aiding adults with learning disabilities, combining endurance sport with community impact. Visit the organization's website for the most recent information.

Race information

27 mi
Full Marathon (27.2 Miles)
21 km
Half Marathon
5 mi
Five Mile Trail Run
Visit the organization's website for the most recent information.
Trail runs nearby

The Henfield Half Marathon is an off-road running event held at Henfield Leisure Centre in Henfield, UK. The scenic half marathon course features trails along a riverbank and a disused railway, incorporating flint paths and stiles, offering a unique and picturesque running experience. The event welc..

The Firle 5km Handicap Trail Race is a scenic trail running event held at Firle Village Hall in the UK. The race features a 5km out-and-back course along the Old Coach Road, primarily on hard trail surfaces with some quiet country lanes, offering beautiful views of the South Downs. It is a handicap..

The Shere 42k, 21k & 10k Multi Terrain Event is a trail running series held in the scenic Surrey Hills, an Area of Outstanding Natural Beauty. The event offers three distances: a 10k route with 123m ascent through woodlands, a new 21k half marathon featuring parts of the North Downs and Ranmore with..

The South Coast Challenge will take place in Eastbourne on Saturday 6 September 2025. You can run between 16 and 63 miles.

UTMB Index

The Sufferings is a challenging trail running event held at Washington Village Hall in Pulborough, UK. The race features three distances: a half marathon, a full marathon, and a 39-mile ultra, all incorporating the toughest and most scenic tracks of the Chanctonbury and Cissbury rings. Participants..

Brighton 50/50 September 2025 is a trail running event held in Brighton, UK, featuring distances of 50 miles, 50 kilometers, and 23 kilometers. The 50-mile race starts at Brighton Beach, traversing the scenic South Downs to Beachy Head and returning along the coastline, offering rolling hills, iconi..

UTMB Index