Mapledurham Backyard Ultra

Mapledurham, United Kingdom • 3 May 2025

The Mapledurham Backyard Ultra is a thrilling last-man-standing running event scheduled for May 3, 2025, at Mapledurham House in Reading. This endurance challenge features a 4.167-mile loop through Chazey Woods, where participants must complete laps on the hour, every hour, until only one runner remains. Ideal for both seasoned ultra runners and newcomers, the event promises a supportive atmosphere with a race village offering refreshments and space for support tents. Participants can also camp at the start line, making it a community-focused experience. The event aims to build on the success of its inaugural edition, fostering a love for endurance running. Visit the organization's website for the most recent information.

Race information

6 km
4.167 Miles / 6.706 Km Loop
Visit the organization's website for the most recent information.
Trail runs nearby

Get festive at the Christmas Jumper Friday Run on a flat, scenic out and back beside the Thames, with distances from 5 km to ultra and a flexible one hour start window. Enter early to secure a free technical running top or take home a medal..

Middlesex Cross Country Championships return to Hillingdon Sports and Leisure Centre in Uxbridge on Saturday 13 December 2025. Youth and senior races from 2k to 12k, chip timed, open to clubs, schools and individuals.

Celebrate Pi at the Mince Pi Run in Shalford Park on 14 Dec 2025 with distances from a family friendly one mile Pi fun run to multi lap challenges and a Pi marathon. Enjoy waterside trails, bespoke Pi pie medals and only 200 places.

Choose your distance on the day and tackle scenic looped courses through woods and trails around Chalfont St Peter, with pacers welcome and a trained medic on standby. Distances from 7k to ultra are offered and top three finishers earn meda..