Home of 50 & 100 mile trail ultramarathons, the Track 100 Mile and the Piece of String Fun Run

Fully marked and supported races across the most scenic trails in the United Kingdom.

SDW50®

Apr 8, 202350mi5700ft13hrs£105

50 mile point to point run from Worthing to Eastbourne on the South Downs Way. Total Climb: 5700ft. 11th Annual. Date: 8th April 2023.

TP100®

May 6, 2023100mi1900ft28hrs£215

100 miles non-stop on foot along the River Thames from Richmond, London to Oxford. 28 hour time limit. Total Climb: 1900 feet. Date: 6th-7th May 2023.

NDW50®

May 20, 202350mi5600ft13hrs£105

12th annual 50 mile trail run from Farnham to Knockholt Pound on the North Downs Way. Total Climb: 5,600ft. Date: Saturday 20th May 2023.

SDW100®

Jun 10, 2023100mi12700ft30hrs£215

100 mile trail run from Winchester to Eastbourne on the South Downs Way. Total Climb: 12,700ft. 11th Annual. Date: 10th-11th June 2023.

NDW100®

Aug 5, 2023103mi11000ft30hrs£215

Point to point 100 mile trail run on the North Downs Way. Total Climb: 11,000ft. 13th annual. Date: 5th-6th August 2023.

CW50®

Sep 16, 202350mi5600ft13hrs£105

50 mile run consisting of a single loop through the picturesque Countryside & rolling hills of the Chilterns. Total Climb: 5600ft. 8th Annual. Date: 16th September 2023.

A100®

Oct 14, 2023100mi5000ft28hrs£215

100 mile trail run taking in the Ridgeway and Thames Path National trails. Total Climb: 5000ft. 12th Annual. Date: 14th-15th October 2023.