Trail Running calendar near Brentwood 2025-2026
We have found 305 Trailruns within 80 miles of Brentwood. See below where and when you can find the races.
We have found 305 Trailruns within 80 miles of Brentwood. See below where and when you can find the races.
Join a friendly 7 hour timed run along the Thames at Wraysbury, with flat paved loops suitable for road shoes. Pick distances from a 3 km loop up to marathon and ultra, and enjoy a medal plus goody bag and riverside views.
Enjoy a scenic, flat trail run around Maidenhead Commons and Summerleaze Lake on Sunday 26 July 2026. Choose 5K, 10K or half marathon and earn a themed medal with free race photos, chip timed results and a lively event village.
Take on the MTC Oxford Ultra, a 49 mile point to point along the Thames Path from Oxford to Henley. Expect scenic riverside trails, three support checkpoints and challenging self sufficient ultrarunning with a bespoke finisher medal.
Take on the 47 mile MTC Windsor Ultra along the scenic Thames from Henley to Kingston, testing endurance with three aid stops and rolling river views. Finishers get a bespoke medal and choice of tech shirt, mug or hat.
Tackle ATW Odyssey12 at Riverside Park, St Neots, a multi terrain lap event where solo runners, pairs or teams rack up 5.3 km laps against the clock. Enjoy festival vibes with live music, food, kids activities and an Odyssey medal for finis..
Take on the North Downs Way 100, a 103 mile trail classic from Farnham to Ashford with 11,000 feet of climbing and a 30 hour cutoff. This Centurion Running event is a Western States qualifier on mostly trail terrain, ideal for experienced u..
Take on the Henfield Half Marathon for a scenic off road 13.1 mile challenge along riverbank and a disused railway, finishing at Henfield Leisure Centre. Enjoy on site facilities, refreshments and a finishers medal.
Run through Alexandra Gardens with views of Windsor Castle at the Windsor Trail Run on 30 August 2026. Choose a 10K or half marathon, enjoy chip timing, free race photos and a lively event village.
Muntjac 15 links five woodlands via hilly single track and forest paths for a scenic but testing trail run. Join fellow runners on 30 August 2026 for a memorable off road challenge.
Run along the River Thames at Temple Island Meadows with half marathon, 10K and junior races supporting Royal Berks Charity. Enjoy mixed undulating trails, finisher medals, chip timing, free photos and a lively event village.