London
Trail Running Calendar near London 2026-2027
Explore the top trail runs near London for 2026-2027! We've gathered 194 exciting trail runs in the area. Check out our detailed list below to find your next local trail run.
January 2027
Looped trail and road races near Chalfont St Peter offering 7K and 10K loops with distance choices up to ultramarathons plus aid stations and medical support.
Looped trail and road races near Chalfont St Peter offering 7K and 10K loops with distance choices up to ultramarathons plus aid stations and medical support.
February 2027
A seven hour time challenge along the River Thames with distances from 3km to 50km, medals and pins, mixed path and trail terrain.
Looped trail and road races near Chalfont St Peter offering 7K and 10K loops with distance choices up to ultramarathons plus aid stations and medical support.
Looped trail and road races near Chalfont St Peter offering 7K and 10K loops with distance choices up to ultramarathons plus aid stations and medical support.
Looped trail and road races near Chalfont St Peter offering 7K and 10K loops with distance choices up to ultramarathons plus aid stations and medical support.
Trail ultra on the North Downs Way and Norbury Park near Dorking, a fairly level 50k with 2986 ft ascent and four staffed checkpoints.
A timed lap event in Crystal Palace Park on 21 February 2027 where runners complete 2.65 km laps to reach distances from 5 km to ultra, with a seven hour limit and a finishers' memento for all participants.
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 42-mile trail race from Chipping Ongar to the ancient Chapel of St Peter-on-the-Wall, following an old pilgrimage route through rural Essex. Mostly off-road and often muddy, the route is waymarked with GPX support, four outdoor checkpoints and mand..
Looped trail and road races near Chalfont St Peter offering 7K and 10K loops with distance choices up to ultramarathons plus aid stations and medical support.
A single lap undulating 10k trail race at Hadleigh Country Park with steep hills, deep mud, technical terrain and mandatory trail shoes.
March 2027
A 10 km mixed-terrain run from Windsor & Eton Brewery along towpaths and parkland, with staggered starts, a pint cup and free drink at the finish, chip timing and downloadable race photos.
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.
A quirky partner carrying race on a 380 m out and back course up The Nower in Dorking, with weigh in rules, helmets required and proceeds donated to a local food charity.
A hilly 13.1 miles out-and-back trail from Dorking to Leith Hill Tower with about 1,800 feet of ascent, water stations and marshals. Race HQ is The Priory School and entry includes a postrace cooked breakfast and a reusable medal.
Twelve consecutive days of timed riverside running in Walton on Thames with multiple distance options, collectible daily lantern medals, finishers shirts, and a Double-Down option to run two half marathons each day.