Trail Running calendar near Slough 2026-2027

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.

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 inaugural Essex County Fell Championships features a new 10km course with 450m of climb. This open-entry fell race offers county prizes for qualified Essex runners. Every finisher receives a free drink.

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.

Thames Ring Series The Thames Ring Series consists of three non-stop ultramarathon distances run on canal and riverside footpaths in southern England. The main event is the Thames Ring 250, a 250-mile (approximately 256-mile) trail race. It..

A limited capacity evening trail run of 5 miles for over 18s with the course run in reverse from previous years. Route files are provided beforehand and finishers can exchange their race number at the bar for a drink.

A countryside walking and running event around Bath on 25 April 2026 with four distances from 12.5 to 26.5 miles, public footpaths and checkpoints offering food and drinks.

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.

The UK Trail Running Festival features a range of trail races for 2026, including marathon, half marathon, 10K, 5K, and fun runs. It offers events for juniors, dogs, and virtual participants, supporting local charities. The event is organiz..

A multi-distance road event at Suffolk Running Centre offering 5k, 10k, half, marathon and ultra options on measured routes. The marathon uses the Kirtling Route; aid stations, parking and bespoke medals are provided.

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.

A one-day circular long-distance event on 26 April 2026 around Coventry, roughly 40 miles (41.4 miles in 2026). Open to walkers, runners and relay teams of up to six, with five checkpoints and a hot meal at the finish.

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.

Trail runs through Alice Holt Forest on 26 April 2026 support GUTS, with a Half Marathon, 10k, 5k and a junior run. Routes use a 5k forest loop with multiple laps for longer distances.