Trail Running calendar near Buckinghamshire 2026-2027

A five mile off road race through woods and farmland around Hurstbourne Tarrant in the North Wessex Downs. Organised entirely by volunteers since 2009, the annual event donates all proceeds to local charities.

A Pretty Muddy 5k obstacle course at Lydiard Park on 01 May 2027 featuring mixed paths, hills and muddy obstacles. The event has wave starts, blue badge parking on grass and a minimum fundraising target of £50.

Combined entry covering four Centurion 100 mile races from 1 May to 17 October 2027, including Thames Path 100, South Downs Way 100, North Downs Way 100 and Autumn 100.

A 100 mile trail race along the Thames Path from Richmond to Oxford on 1 May 2027, with 1900 ft of climb, a 30 hour cut off and a minimum of twelve aid stations. Entries require a qualifying 50 mile finish within 15 hours.

An official Backyard Ultra at Blaise Castle Estate on 1 May 2027 where runners complete a 6.7056 km loop each hour until one runner remains. The woodland loop is hilly and technical, head torches are mandatory at night and minimum age is 20..

Three towns host races across a Bank Holiday weekend in 2027, with combined results forming the Mid Sussex Marathon. Distances include 10 mile, 10k, a chip timed mile and a family fun run, plus virtual and combo marathon options.

A guided 30 mile trail run from West Hanger, Guildford, combining North Downs Way and Greensand Way with on-route coaching and group pacing.

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 one-day trail event in Ilmington offering six distances from 10K to 100KM plus a new two person 100KM relay, with feed stations, baggage support, GPX maps and trackers on the longer routes.

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.