Trail Running Calendar South East (England) 2026-2027

A five mile mixed terrain loop around Hall Barn Estate with race HQ at Beaconsfield Rugby Club on 6 April 2026. Trail shoes are recommended; chip timing, waymarking, marshals and first aid are provided.

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..

A 50 mile trail race from Worthing to Eastbourne along the South Downs Way, featuring 5700 feet of climb, seven aid stations, mandatory kit checks and a 13 hour cut off, finishing with a lap of the Eastbourne athletics track.

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.

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.

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.

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.

Take on the 42 km Brighton Trail Marathon through the South Downs from Stanmer Park to Hove Lawns on 12 April 2026. Hilly chalk ridgelines, woodland and a finish on the Brighton Marathon route promise a scenic, rewarding challenge.

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.

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.

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.

Run the rolling trails of the South Downs at the Grand National 10 km Trail Run in Findon, with 10 km, canicross, 5 mile and kids events for all ages. Scenic route, bespoke medals, charity support and a fun Filly or Colt costume prize.

Timed lap event at Buchan Country Park on 19 April 2026 with 5.3 km laps to create distances from 5 km up to ultra within a 7 hour limit. Runners may choose one of twelve medals or a lower cost no medal entry.

Run the Thames Ring Series along scenic river and canal towpaths with three distances: TR250 full loop, TR150 and TR100 sections. Choose your challenge and enjoy riverside trails, checkpoint support and GPS tracking across this adventure.

A 15 mile trail run from the beer garden of the Ye Olde Smugglers Inne in Alfriston with two pub checkpoints offering a drink and snack; route GPX and a race narrative are provided and results appear within 24 hours.

A blindfolded navigation challenge near Winchester where participants are dropped at unknown locations and must find their own way back on foot. Options cover six, ten or fifteen mile drops and devices are surrendered at registration.

Trail runs of 10 km and 10 mile around Angmering Park Estate on 26 April 2026, with canicross options, marshalled courses, water stations and free race photos.