Trail Running calendar near Harwell 2026-2027

A Welsh trail event offering a 100-mile loop from Abergavenny and a 100 km route from Talgarth to Abergavenny, both following Offa’s Dyke, Cambrian Way and Beacons Way across mountain terrain.

The Ridgeway 40 offers a 40-mile journey along the ancient Ridgeway track from Avebury to Streatley. Traverse chalk downlands across three counties with support at checkpoints. Open to walkers and runners aged 14 and up.

This event on the Thames features 10K, half, and marathon distances on scenic riverside paths. Starting from the Wraysbury Skiff Club, the courses use fully marked out-and-back loops. The area near Runnymede offers beautiful countryside and..

Shires and Spires is a multi-terrain race through the Northamptonshire countryside, starting from historic Naseby. The event alternates its course direction yearly and offers five distances from a 10K to a 35-mile ultra marathon. Entry incl..

A self-guided 13-mile run along Letchworth's scenic Greenway trail. This is a run, not a race, due to road crossings. Finishers get a wooden medal and refreshments, with profits supporting a local youth mental health charity.

Challenge yourself on the hilly Cocking 10k Trail Race through the scenic South Downs. The event offers chip timing, a finisher's medal, and on-site parking. Entries are online only and limited to 350 runners.

Trail races through Thomas Hardy countryside near Dorchester offering a roughly 5 mile option and an about 13.1 mile half marathon. Routes are mainly trail with steep sections and an event village at Dorchester Rugby Club.

Join the Dilton Dash on 10 May 2026 at Dilton Marsh for scenic multi terrain 10K, 3K and 1/2K fun runs supporting village causes. Expect stiles and gates, medals for all finishers and prizes for winners.

Explore the scenic trails and ridge lines of the Chiltern Hills on this guided 30km trail running adventure. This non competitive event features expert lead runners, technique instruction, and full support along the route.

Tackle the scenic 10 km Scorpion Run at Symonds Yat Rock in the Forest of Dean with winding trails and a final climb to the finish. Enjoy undulating gravel tracks, riverside views and a cafe at the start and finish for post run treats.

Black to the Trails is a vibrant trail running festival designed to boost ethnic diversity in the sport. Run a 1K, 5K, 10K, or Scotch Bonnet 10K on the beautiful trails of Dunstable Downs. Enjoy a day full of activities, food, and music wit..

The Woodland Woggle is a scenic 6k trail race through Hampton Estate and Puttenham Common. Expect undulating hills, Bluebell woods, and chip timing, with a bespoke medal for every finisher. Ample parking and refreshments are available at th..

Explore the Cotswolds at the Stroud Trails Event, offering four scenic trail distances from an 11 km quarter marathon to a challenging ultra. The route takes in hills, towpaths, and common land with full support and marked trails. Registrat..

Race 2 of the Northants 5K Series heads to West Lodge Farm for a multi-terrain course through fields and nature trails. All finishers collect a unique series medal. The evening event offers free parking, on-site facilities, and food availab..

A summer series of four evening races in Dinton Pastures Country Park. Choose from a flat, off-road 5km or 10km, or a kids' 2km. Enjoy chip timing, a finisher's medal, and the chance to track your progress across the summer months.

Event Overview The North Downs Way 50 (NDW50) is a 50-mile point-to-point trail run along the North Downs Way National Trail. It starts in Farnham, Surrey and finishes in Knockholt Pound, on the outskirts of Greater London. The total climb..

Take on the stunning Jurassic Coast World Heritage Site in May 2026. Choose your distance from a 10K up to a full 100km trek, with full support and rest stops along the iconic coastline. Walk, jog, or run your way from Corfe Castle to a cel..

Tackle the scenic Berkshire Downs in this 26th edition trail running event. Choose between a 26.8-mile marathon or a 16-mile challenge on a mixed-terrain course. All finishers receive a unique pottery mug, and a free BBQ awaits runners.

The Semington Slog on 16 May 2026 features a 10 km and 2 km run from St Georges School. Routes explore the village and Kennet and Avon Canal towpath. Enjoy community activities, refreshments, and prizes.

Run through scenic vineyard hills at Denbies Wine Estate in Dorking on 16 May 2026 on a 5.3 km undulating off road loop. Choose as many laps as you like for distances from 5 km up to ultra with flexible start times and limited places.