Home of marked and fully supported 50km, 50 mile and 100 mile ultramarathons.


Mar 15, 202531mi4000ft9hrs£75

50km run through the beautiful and tranquil rolling countryside of the Chilterns. Total Climb: 4000ft. 3rd Annual. Date: 15th March 2025.


Apr 12, 202550mi5700ft13hrs£115

50 mile point to point run from Worthing to Eastbourne on the South Downs Way. Total Climb: 5700ft. 13th Annual. Date: 12th April 2025


Jan 1, 2025100mi0ft17hrs£215

Elite level 100 mile track race. 100km, 12hr and 100 mile world records set here in 2021 and 2022. 5th Annual. Date: TBC.


May 3, 2025100mi1900ft30hrs£215

100 miles non-stop on foot along the River Thames from Richmond, London to Oxford. 30 hour time limit. Total Climb: 1900 feet. Date: 3rd-4th May 2025.


May 17, 202550mi5600ft13hrs£115

14th annual 50 mile trail run from Farnham to Knockholt Pound on the North Downs Way. Total Climb: 5,600ft. Date: Saturday 17th May 2025.


Jun 14, 2025100mi12700ft30hrs£215

100 mile trail run from Winchester to Eastbourne on the South Downs Way. Total Climb: 12,000ft. 14th Annual. Date: 14th-15th June 2025.


Aug 3, 2024103mi11000ft30hrs£215

Point to point 100 mile trail run on the North Downs Way. Total Climb: 11,000ft. 14th annual. Date: 3rd-4th August 2024.


Sep 21, 202450mi5600ft13hrs£105

50 mile run consisting of a single loop through the picturesque rolling hills of the Chilterns. Total Climb: 5600ft. 9th Annual. Date: 21st September 2024.


Oct 12, 2024100mi5000ft28hrs£215

100 mile trail run taking in the Ridgeway and Thames Path National trails. Total Climb: 5000ft. 13th Annual. Date: 12th-13th October 2024.


Nov 9, 202450mi10000ft15hrs£105

50 mile run consisting of 5 x 10 mile loops on the forest trails of Wendover Woods. Total Climb: 10,000ft. 8th Annual. Date: 9th November 2024.


Dec 11, 2024200mi22500ft96hrs£600

200 mile non-stop winter trail run in a loop around the South of England. Total Climb: 23,000ft. 2nd annual. Date: 11th-15th December 2024.


Dec 25, 2024mifthrs£

Our virtual event. Runners have 70 days to complete distances ranging rom 50 to 1000 miles. 25th Dec 2024 - 5th March 2025.