Trail Running calendar near Grafham Water 2026-2027

Marston Madness is a 6-hour endurance challenge on a scenic 5k loop. Run solo or with friends to see how many laps you can complete, with professional chip timing tracking your progress in a supportive atmosphere.

A guided 10 km trail run through the scenic Thursley National Nature Reserve. Experience the famous boardwalk on this flat route, offered as both sunset and night runs. It's a group run with a steady pace, and head torches are provided for..

This 10km fell race offers a classic Peak District challenge. The route starts on the canal towpath before a significant climb past the iconic Black Rocks to a trig point. It returns via the same path for a fast finish back at Cromford Mead..

Tackle a multi-terrain 5K through the scenic Fermyn Woods Country Park near Brigstock. This evening race offers a unique finisher's medal and is open to runners aged 11 and over, with younger participants requiring adult accompaniment. Limi..

A 6-hour timed run along the flat Jubilee River in Slough on July 9, 2026. Participants complete laps of 5.24 miles, choosing their own distance. Every finisher gets a medal.

Explore the scenic paths of Coombe Abbey Park in this Summer 10k. The undulating route winds through woodlands and meadows, finishing with a medal or a plantable tree token. Entry includes the option to support a children's charity.

Choose your own distance in this flexible 7-hour timed challenge along the River Thames. Run as many laps as you like on a flat, signed course. All finishers get a medal and goody bag, with distance pins for longer runs.

Race to the Stones is a historic ultramarathon on Britain's oldest trail, the Ridgeway. Choose from 50 km or 100 km distances, finishing at the ancient Avebury Standing Stones. The event offers extensive support with well-stocked pit stops,..

Explore the scenic Chiltern Hills on this trail run from Princes Risborough. Choose from five distances, from 8 km to a 50 km ultra, on a course featuring ancient woodlands and chalky paths. The event includes aid stations, a cup-free polic..

The Rodent Wriggle features three scenic routes through Mid Suffolk's countryside, winding along the River Rat past historic churches. Refreshments await at checkpoints, and all finishers get a certificate. Entry is capped at 165 participan..

Multi distance trail event at Bawsey Country Park with lap based half, marathon and ultra options. Aid stations each lap, parking included and the event is cupless so participants should bring their own bottles.

Ultra:5K challenges runners at Box End Park in Kempston. The format requires running a 5K on the hour, either five times or three times. The fastest total time across all the runs wins.

The Rebellion Run is an 18-mile guided trail run along the historic Kett's Country Long Distance Trail. It's a non-competitive group event, starting in Wymondham and finishing in Cringleford. A run leader guides the way, sharing stories of..

Race The Light is a Saturday evening trail run in Wendover Woods supporting the Chilterns Neuro Centre. Choose from a hilly 10K, a 5K, or an accessible 1.5K route. The fully-marked course is open to runners, walkers, and wheelchair users.

A 24-hour coastal trail running challenge on the Shotley peninsula. Run solo, in pairs, or in a team over a 4.3-mile loop. Camping is included for a full weekend of running.

Explore the trails of the Winwick Hall Estate in this fully marked event, featuring 10k and 5k races plus a 2k kids' run. A portion of entry fees supports the Bruce Green Foundation. All finishers get a medal and free race photos.

A chip timed 10 km on 19 July 2026 in Highfield Park, St Albans, on a flat, single lap route along the Alban Way. The event village includes a free family fun run, food, music and a charity link to Alzheimer's Research UK.

Set on the scenic, private Revesby Estate, this festival offers trail runs from a 5K to a half marathon. For a unique test, try the multi stage Challenge the Estate. There's also a team option for groups.

Set your own distance goal in this 6-hour trail running challenge. Runners complete as many 5K loops as they can on a scenic, 95% off-road course. Every finisher receives a medal.

Day One of the 10 day Great Barrow Challenge at Suffolk Running Centre uses the Denham Flats route and offers distances from 5k to ultra. Parking and a base camp with an aid station are provided and a bespoke medal is awarded each day.