Marlow
Trail Running Calendar near Marlow 2026-2027
Explore the top trail runs near Marlow for 2026-2027! We've gathered 195 exciting trail runs in the area. Check out our detailed list below to find your next local trail run.
June 2027
An urban ultramarathon in central London with 100km, 50km and 25km routes that pass over 100 city landmarks, with checkpoints and training resources.
A muddy 5k obstacle course at Cassiobury Park where participants climb, crawl and slide through timed waves while raising funds for cancer research.
A 75 mile off road ultra on a one mile loop at Denbies Wine Estate with up to 30 hours to finish, chip timing and multiple concurrent race options.
Timed event at Denbies Wine Estate on 20 June 2027 using a 1 mile loop; runners choose distances from 1 mile to ultra and run laps within a six hour limit.
Scenic trail half marathon across Dunstable Downs in June 2027, 21.2 km with 450 m ascent, marked route, two aid stations and a 250 runner limit.
July 2027
A 21.1 km trail race along The Ridgeway between Wendover and Princes Risborough in Buckinghamshire, fully marked with two aid stations and a 4 hour time limit.
Group guided 10 km trail run across the boardwalk and heathland of Thursley National Nature Reserve with evening and night options, car parking and a post-run alcohol-free beer.
A Ridgeway trail event on 10–11 July 2027 offering 50 km and 100 km formats, finishing at Avebury Standing Stones with marked trails, pitstops, medical support, and on course services.
Community focused 10 km race at Highfield Park, St Albans, with a free family fun run, event village, chip timed results and a grass finish.
September 2027
A mixed-terrain trail event along the Thames at Remenham Farm on 4 September 2027, offering a half marathon, a 10K and a junior race for under 11s with chip timing and themed medals.
Guided 10 km trail run around Silent Pool near Guildford, following parts of the North Downs Way and Netley Heath forest. Sessions run at dusk or at night with headtorches in a led group and a recommended pace of about 10 min per mile.
October 2027
A single 100K loop through the Chiltern Hills from Chesham, with six checkpoints, GPS open tracking and Trail Running Association/UKA permit.
A guided 30 mile trail run from St Martha's Hill exploring the Surrey Hills and Box Hill with an experienced ultra runner and coach. Group pace, recommended 22 miles training, cost £55 and an alcohol free beer may be available.