Trail Running calendar near Weir Wood Reservoir 2026-2027

Three Forts Challenge is a Sussex trail running event across the South Downs from Lancing Manor Leisure Centre. It offers a full marathon, half marathon and a 5 mile run, and directs event profits to Ferring Country Centre and local chariti..

A 4 km multi terrain relay at Culden Faw Estate, Henley on Thames with solo, pairs and team formats plus a race village and on site camping.

A four leg stage trail relay along the Roach Valley Way covering 23 miles in total. Teams of four navigate by maps and way markers while proceeds support Havens Hospices.

A guided 12.5 mile trail run around Box Hill that gains about 1000 metres of elevation across woodland, heathland and open fields. Group pace with technical climbs and scrambling and a chance of an alcohol free beer at the finish.

A 10 hours 10 laps endurance event at Denbies Wine Estate with roughly 3, 4 or 5 mile loops and graded finishers awarded a medal and coloured shirt.

A spring trail event in Harewood Forest near Andover offering 5k, 10k, canicross and a childrens fun run on undulating, multi terrain courses with marked routes and on course marshals.

Off-road half marathon and 10 km through Collingbourne woods near Ludgershall with aid stations, medical support, chip timing and medals for all finishers.

A two day, two person self supported navigation event at Newlands Corner with camping, maps and a points based route across the Surrey Hills.

A point-to-point 50 km ultramarathon from Horsham to Brighton seafront on 8 May 2027, with mixed trails, four feed stations, full course signing and individual or two-person relay entry options.

A mud obstacle 5k at Southsea Common with climbs, crawls and slides on a mainly flat route. Waves start every 15 minutes, participants must be 13 or older, and the event supports fundraising for Cancer Research UK.

Nuclear Rush in Brentwood, Essex offers muddy obstacle races at the Secret Nuclear Bunker Estate with a 6 km course (40+ obstacles) or a 12 km course (70+ obstacles).

An inflatable obstacle course and fun run in Guildford, Surrey on 8 May 2027 offering 2.5k, 5k, 10k and 15k distances with music zones, water stations and a finisher medal for every participant.

A long-established marathon in North Essex organised by Halstead Road Runners, set on scenic low-traffic roads and part of the Essex Road Running Championships. The event has a 500-runner limit, supports local charities and holds a course m..

A guided 30 km trail run in the Chiltern Hills from Tring, with checkpoints, trail technique instruction, a finisher’s medal and Trees not Tees certificate.

Off road 10 km, 5 km and family runs at Milton Creek Country Park on 9 May 2027 supporting The Oliver Fisher Special Care Baby Trust. Varied trail terrain, route maps and event medals are provided.

Trail races through Rathfinny Wine Estate with single 10.7 km and double 21.4 km loops, marked off-road terrain and chip timing. The carbon neutral event supports the WOLO Foundation and provides aid stations, recycled medals and parking ar..

A multi distance trail event around Bewl Water reservoir near Lamberhurst, Kent. Races include 50km, marathon, half marathon and 10km on wooded trails and country lanes with start and finish at the Visitor Centre.

Two day obstacle race weekend in Henley on Thames featuring Sprint, Super, Beast and kids races across historic town and riverside terrain.

A family friendly untimed inflatable obstacle run at Brands Hatch on 15 May 2027, offering lap based distances from 2.5k to 15k with music zones, on course hydration and a finisher medal for all participants.

A 50-mile point-to-point ultramarathon on the North Downs Way from Farnham to Knockholt Pound with about 5,600 ft of ascent, six aid stations, medical support and a 13 hour cutoff.