Trail Running calendar near High Wycombe 2026-2027

The 50 Mile Grand Slam 2026 challenges runners to complete four 50 mile ultras across the UK trail calendar. The series spans from April to November, covering iconic routes like the South Downs Way and Wendover Woods. It is a demanding test..

The South Downs Way 50 is a 50-mile race on the famous National Trail from Worthing to Eastbourne. It's the 14th edition and the first race in the 2026 50 Mile Grand Slam. Entry is via a waiting list.

A riverside trail event at Temple Island Meadows on 11 April 2026 offering a half marathon, 10K and junior out-and-back race with chip timing, marked kilometres, medals and post-race goodies.

Take on the Rosebud Marathon, a 26.2 mile stretch of the Rose of the Shires Ultra through scenic Northamptonshire trails, roads and canal tow path. Enjoy waymarked routes, on site support, a finisher medal and prizes for top runners.

Discover scenic trails across the Cowdray Estate and heathland commons at Spring Run the Seasons Cowdray on 11 April 2026. Choose from a kids 3km up to 10 miles, with canirun options for dog owners, perfect for all abilities.

Trail running event at Stanmer Park, Brighton on 11 April 2026 offering three routes on the South Downs Way, varied hilly terrain, outposts for the longer routes, and a reusable cup policy.

A guided one-day trail marathon of 42.2 km through the Chiltern Hills, led by English Athletics qualified run leaders. The route includes Ridgeway sections, well stocked checkpoints and a wooden finisher’s medal.

Enjoy a family friendly day in Froyle with a scenic 10 km trail through fields and woods and a colourful Kids Colour Dash for ages 4 to 12. Village hall cakes, picnic space and on course support make it a relaxed community event.

Epping Forest Wildwood Trail Series on 11 April 2026 offers a half marathon (two laps) and a 10 km (one lap) through ancient woodland at Chingford Plain, London. Courses are chip timed, fully marked, and include aid stations and an eco frie..

A seasonal trail run series at Cowdray Estate offering 5 km, 10 km and 10 mile races across spring, summer, autumn and winter, with a summer evening event that includes a BBQ, bar and spot prizes.

An out-and-back ultra along the traffic-free Brampton Valley Way with a county-versus-county scoring format, feed stations, two dark tunnels, and a 7 hour cut-off. Entries limited to 100 starters from each end.

A circular 10 km trail race around the Nene Valley, starting and finishing at KC Active in Kings Cliffe. The course is waymarked and marshalled with an aid station, eco measures in place and entry via SiEntries with a £22 fee.

A 42 km trail marathon across the South Downs, starting at Stanmer Park. The unique route merges with the final stretch of the Brighton Marathon for a finish on Hove Lawns. Participants must carry mandatory kit and use a reusable cup at aid..

Windsor 50 on 18 April 2026 uses Windsor Racecourse basecamp and looped 50 km, 25 km and 10 km routes through the Great Park and along the Thames Path, with regular rest stops, medical support, timing and categories for walkers and fast run..

An ultra trail race along the Chiltern ridgeline from Berkhamsted Castle to Hampden Meadow in Wendover. The route is about 51 km with 996 m of ascent, fully marked and supported by three staffed aid stations and a nine hour cutoff.

A guided 18 mile trail run across the Malvern Hills meeting at North Quarry Car Park in Great Malvern on Saturday 18 April 2026. The route visits ridge summits with over 1300 m of ascent and returns via hillside and woodland trails.

Trail races on the Serpent Trail in the South Downs National Park offering five distances from 12km to 110km, start and finish at Cowdray Farm Shop, with marked courses, aid stations and on-site camping available.

The Essex County Fell Championships will take place in Buckhurst Hill on Saturday 18 April 2026. You can run 6 miles.

A timed, lap-based run on a flat 5.3 km towpath course by the River Thames in Walton on Thames. Distances range from 5 km to ultra with flexible rock up and run starts and an optional no-medal lower-price entry.

A scenic trail half marathon along Seaford seafront and the South Downs, organised by Martello Rotary Seaford and Seaford Striders. The event features marshal support, water stations, a bespoke medal and raises funds for local charities.