Trail Running calendar near Harwell 2026-2027

Experience a trail run along the River Thames starting from Marlow Rugby Club. Cross the famous Marlow Bridge and celebrate at the finish with a custom medal and a Rebellion Brewery beer or soft drink.

An off-road race in Dursley on 25 May 2026 covering about 10.31 km with 318 m of climb, visiting Cam Peak, Cam Long Down, Uley Bury and Downham Hill. Entries are limited to 120 and handled via Entry Central.

Beat the Sunset 50km is a single-lap ultra marathon starting in Maidenhead. Runners have 9 hours and 12 minutes to complete the 75% off-road course before sunset. The event features four stocked checkpoints, live tracking, and free race pho..

The Ridgeway Challenge The Ridgeway Challenge is an 86-mile (139 km) point-to-point trail running race. It follows the entire length of the Ridgeway National Trail, a historic path used for over 5,000 years. The route runs from Ivinghoe Bea..

Run 50km along the River Medway from Rochester Castle to Tonbridge, passing three castles and scenic villages on flat trails. The race features a wave start, three aid stations, and a track finish, with a 9-hour cut-off. Your entry includes..

The Ridgeway Chase is a 60 km ultramarathon along the historic Ridgeway National Trail, starting at Ivinghoe Beacon and finishing near Wallingford. Held alongside a longer challenge, it offers runners scenic ridgeline views across the Chilt..

The Southampton Running Festival returns on May 31st, 2026. Runners can choose from 5K, 10K, or Half Marathon laps on a scenic route through Southampton Common. The event includes a lively village and support from marshals along the course.

This 50km ultramarathon is a unique point-to-point journey from Peckham, London, to East Peckham, Kent. Runners will experience a route that transitions from urban streets to the Kent countryside. The event offers aid stations and marked co..

Explore the scenic trails of the Surrey Hills on a guided half marathon. The route changes each time but always features iconic spots like St Martha's Hill. Choose from weekend runs or a special summer evening adventure.

The Griffin Challenge is a flexible 6-hour endurance event where you choose your own distance by completing laps on a flat, stone-surfaced trail. It starts and finishes at the Braybrooke Taproom, which offers post-run refreshments. This is..

Run a 4.16-mile trail loop every hour until only one runner remains at this private farm venue in Hampshire. The event offers camping, full support, and a unique last-runner-standing format. It's a Bronze Ticket backyard ultra set on a vari..

Run laps through Denbies Wine Estate in the Fire Horse Run, a timed off road challenge on an undulating 5.3 km loop with distances from 5 km to ultra. Pick as many laps as you like within a seven hour window for a flexible, scenic race day.

A 46-mile annual run or walk through the Cambridgeshire countryside, visiting four historic WWII Pathfinder Force airbases. Participants can tackle the route solo or as a team relay, starting and finishing at RAF Wyton.

A multi-distance running event in Bath that routes through two restored railway tunnels, including a 1672 m subterranean section. Distances range from a 500 m Colourburst to an ultramarathon, with the start and finish at Brickfields Park.

BigSea Trails is the water event in the Classic Element Trail Series on the Isle of Purbeck on 7 June 2026. Routes start and finish on Knoll Beach and range from a half marathon to a 54k ultramarathon with stocked aid stations.

Challenge yourself on the scenic forest trails of Wendover Woods. Choose from a hilly Half Marathon, 10k, or Junior Run. All finishers receive a bespoke medal.

Run on the sand at Bournemouth Beach. This event offers 5K and 10K distances, starting from Bournemouth Pier and heading east along the coast. It presents a unique challenge with its beach terrain and coastal views.

A lively fell race on Coombe Hill near Wendover on 7 June 2026, tackling 7 km with 220 m of climb and rewarding hilltop views. Entry on the day, modest fees and a pint included make this a friendly, competitive outing for juniors and teams.

Explore the testing trails of Alice Holt Forest in Surrey at the inaugural Wild Trail Runs. Choose between a 10km or Half Marathon distance, with chip timing and feed stations provided. Canicross runners are welcome, and all finishers recei..

The Beast is back for 2026. This unique 10k takes place on the scenic grounds of the National Trust's Brockhampton Estate, with a strict limit of 100 runners.