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

HH50K®

Mar 16, 202431mi4000ft9hrs£70

50km run through the beautiful and tranquil rolling countryside of the Chilterns. Total Climb: 4000ft. 2nd Annual. Date: 16th March 2024.

SDW50®

Apr 13, 202450mi5700ft13hrs£105

50 mile point to point run from Worthing to Eastbourne on the South Downs Way. Total Climb: 5700ft. 12th Annual. Date: 13th April 2024.

CT100®

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.

TP100®

May 4, 2024100mi1900ft28hrs£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: 4th-5th May 2024.

NDW50®

May 18, 202450mi5600ft13hrs£105

13th annual 50 mile trail run from Farnham to Knockholt Pound on the North Downs Way. Total Climb: 5,600ft. Date: Saturday 18th May 2024.

SDW100®

Jun 8, 2024100mi12700ft30hrs£215

100 mile trail run from Winchester to Eastbourne on the South Downs Way. Total Climb: 12,000ft. 12th Annual. Date: 8th-9th June 2024.

NDW100®

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.

CW50®

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.

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.

WW50®

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.

WD200®

Dec 13, 2023200mi22500ft96hrs£550

200 mile non-stop winter trail run in a loop around the South of England. Total Climb: 23,000ft. 1st annual. Date: 13th-17th December 2023.

CR1VS®

Dec 25, 2023mifthrs£

Our virtual event. Runners have 70 days to complete distances ranging rom 50 to 1000 miles. 25th Dec 2023 - 3rd March 2024.