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.


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.


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.


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.


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.


Jul 8, 202350mi10000ft15hrs£105

50 mile run consisting of 5 x 10 mile loops on the forest trails of Wendover Woods. Total Climb: 10,000ft. 7th Annual. Date: 8th July 2023.


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.


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.


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.