Trail Running calendar near Portslade 2026-2027

An evening trail race of **10 km** on the original anti-clockwise course, with a GPX route, event T-shirt, timed finish and post-race coffee and cake.

A 7 hour timed riverside challenge in Egham with a 3 km minimum to earn a themed medal, goody bags including a vegan option, distance pins and aid stations. Flexible distances from 3 km up to ultra distances under age rules.

Trail races at Wendover Woods feature a half marathon, 10k, 5k and junior race across steep woodland with 181 m of climb. Entries include a themed medal, free photos, chip timing and post race goodies.

About 52 miles across the South Downs National Park, a circular challenge from Plumpton Agricultural College visiting Lewes, Glynde and Alfriston with about 7,000 feet of ascent.

A ten day running series in Walton on Thames from 22 to 31 August 2026 offering daily themed rubber ducks and ten giant spinning ducky medals, with distances from 5 km to ultra and certified out-and-back routes along the Thames towpath.

The Seven Sisters 10K Run/Walk will take place in Birling Gap on Saturday 22 August 2026. You can run 10 kilometers.

Free community trail run from Sandhurst to Bodiam Castle, about 10.25 km, with guided or independent GPX options and varied rural terrain.

Full and half marathons through Richmond Park on 23 August 2026, starting at Sheen Gate, using park trails with refreshments and UK Athletics affiliation.

Point-to-point mixed terrain running from Mayflower Park following the Old Way pilgrim trail, with 15 Mile and Marathon options. The route includes a short boat crossing of the Hamble River and passes several historic landmarks.

Trail running from Lancing College across the South Downs with 5K, 10K, Marathon and 50K routes, marked courses, aid stations and chip timing.

Half and full marathons in Richmond Park on 23 August 2026, with multi-lap routes along the Tamsin Trail, refreshment points and UK Athletics affiliation.

A trail run entirely within Richmond Park offering half marathon and marathon distances, a route past the White House and park lakes, and on-course drinks and feed stations.

A steep, scenic trail run in Godshill offering a 5K one-loop option and a 10K two-loop option with 738 ft of climb. A relaxed community fundraising event with no chip timing and local charity support.

An 8 mile urban to trail loop from Bournemouth Square into Meyrick Park, fully marked and chip timed with one aid station and a beginner-friendly, mixed-surface course.

A trail half marathon from Creasey Park across the Dunstable Downs, run mainly on footpaths and bridleways. The self navigated course includes checkpoints and guide runners, a GPX file, on course drink stations and event facilities.

A **7.5 km** mostly off road trail loop around Ticehurst with marked and marshalled course, limited entries, prizes and tea and cake after the race.

Timed laps around Ardingly Reservoir with distances from 5 km to ultra, flexible morning starts, chip timing and bespoke finisher medals.

Two self-navigation trail races in Chelmsford on 23 August 2026: the hilly Admiral McHilly Trail of about 16 miles and the flatter Chelmer Trail of about 6 miles, with written route instructions and no course markings.

London Backyard Ultra is a loop race where runners complete a four mile loop each hour until one runner remains. It takes place at Frylands Wood Scout Outdoor Centre on 29 August 2026 and includes pitches, showers, and race photography.

An obstacle mud run on a permanent assault course near Dorking, Surrey, offering 5 km and 10 km options, multiple laps, and entries for solo runners, teams and charities. The course includes mud, water, walls and climbing obstacles.