Trail Running calendar near Weir Wood Reservoir 2026-2027

A scenic 10 mile race in Milton Keynes that follows riverside parkland and passes through the narrow Cattle Creep tunnel, with canicross friendly provisions and chip timing.

Two coastal half marathons in Portsmouth and Langstone across Valentine’s weekend, with an optional ferry crossing and a bonus medal for completing both days.

Looped races at Chalfont Park Sports Club and Chalfont St Peter Community Centre let runners choose distances from single 7K or 10K laps up to ultramarathons, with drop bag access, aid stations, crew support and on-site medical cover.

A lapped event on the Flitch Way near Rayne offering 5 km, 10 km, half and full marathon and a six hour challenge. Loops are 5.3 km with an aid station at the end of every lap and a bespoke medal choice.

Looped races at Chalfont Park Sports Club and Chalfont St Peter Community Centre let runners choose distances from single 7K or 10K laps up to ultramarathons, with drop bag access, aid stations, crew support and on-site medical cover.

Trail ultra on the North Downs Way and Norbury Park near Dorking, a fairly level 50k with 2986 ft ascent and four staffed checkpoints.

BigMud Trails (EARTH) offers three single lap trail races in the Meon Valley from Queen Elizabeth Country Park. Courses include climbs to Butser Hill, stocked aid stations, mandatory fluid carry and an option to plant a tree instead of a me..

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.

Running event at Newlands Corner offering 15 km and 10 km options, organised by G3 Series on 27 February 2027.

A 30 mile non-competitive group trail run from Harting Down along parts of the South Downs Way, passing Beacon Hill, Cocking Down and Kingley Vale. Led by an experienced guide and recommended for those who have run at least 22 miles in trai..

Coastal trail run around the Chidham Peninsula in Chichester Harbour with two distances, harbour views and a low-tide foreshore crossing. Chip timing, finisher medal and on-course refreshments are provided.

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 checkpoint..

Looped races at Chalfont Park Sports Club and Chalfont St Peter Community Centre let runners choose distances from single 7K or 10K laps up to ultramarathons, with drop bag access, aid stations, crew support and on-site medical cover.

A single lap undulating 10k trail race at Hadleigh Country Park with steep hills, deep mud, technical terrain and mandatory trail shoes.

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.

Coastal trail event in Eastbourne on 6 March 2027 offering 10K, half, marathon and ultra routes across chalk cliffs and rolling downland.

A coastal mixed terrain event at Milford on Sea with an out and back 5.3 km lap. Runners pick their distance from 5K to ultra with aid stations, toilets, and a medal for anyone completing at least one lap.

Guided trail half marathon in the Chiltern Hills: about 13 miles with grouped pacing, a mid-route refreshment point and a finisher’s medal.