Trail Running calendar near Grafham Water 2026-2027

A 50 km multi terrain ultramarathon around Maidenhead, run on a single lap route that follows the Thames Path and Jubilee River. The course is mostly off road with four aid stations, chip timing, live tracking and free race photos.

An 86 miles (139 km) point to point trail race along the full length of The Ridgeway National Trail from Ivinghoe Beacon to Avebury Stones. The event features open tracking, permanent signage and aid stations spaced along the route.

A 50km ultra along the River Medway from Rochester to Tonbridge, mostly on marked towpaths and trails and passing three medieval castles. The event includes three aid stations, live timing, bag transfer and a strict nine hour cut off.

A 60 km point to point ultramarathon along the Ridgeway National Trail from Ivinghoe Beacon to near Wallingford, featuring open tracking, four aid stations and a 10 hour time allowance. Entries close 17 May 2026.

Functional fitness racing in Twickenham on 30 May 2026 with ten Xercises and repeated runs across solo, doubles and relay divisions. A LITE weight division is available and all entrants must be 18 or older.

A Pretty Muddy *5k* obstacle course at Royal Windsor Racecourse featuring climbing, crawling and sliding across grass and tarmac beside the River Thames. Waves run every 15 minutes and participants must be 13 years or older.

A timed endurance event at Redbridge Cycling Centre where competitors run a 4.2 mile (6.7 km) loop every hour and must finish each loop within the hour. After extensive loops a final straight race decides the winner.

A mixed terrain half marathon and 10k in England on 30th May 2026. Routes mix quiet country roads and off road sections, and the event raises money for local good causes.

Track-based running at Wodson Park in Ware, with distances from *5k* to a 6 hour challenge on a 400 metre athletics track, chip timing, aid stations, and on-track viewing for supporters.

A memorial trail run of about 5.5 miles from Worksop College into Clumber Park on 31 May 2026, with marshalling, first aid support and a finisher medal. All profits are donated to Cancer Research.

Northampton 5k, 10k and Junior race takes place at Sixfields Stadium on Sunday 31st May 2026. The races start and finish inside the stadium before moving onto closed roads around Northampton.

A four-round trail series on footpaths, fields, woods and some roads held across June to September. All four rounds count toward individual championship scores, with timed results, navigational questions, and t-shirts for those who complete..

A guided trail half marathon around the Surrey Hills starting and finishing in Guildford. The 13 miles route features St Martha's Church, Shere and sections of the North Downs Way and is run in a steady group pace with torches and optional..

A six hour lap based event from Braybrooke Taproom on well surfaced trails along the Griffin Trail and Brampton Valley Way, with free parking, onsite toilets and a taproom for post run refreshments.

A timed riverside event on a 5.3 km out and back Thames course where runners choose how many laps to complete within a seven hour limit. Ten pound entry supports the Rays of Sunshine charity and a double sided medal is awarded.

An evening marathon that follows canals, waterfalls, vineyards, woodland and coastal saltmarshes, running from early evening into the night. Registration for the 2026 edition is closed.

A backyard ultra at High Lodge Thetford Forest where runners complete a 4.167 miles loop each hour until one person remains. 6 and 12 hour timed options are available; the open event uses chip timing and offers a £500 prize.

An inflatable obstacle-course fun run in Lincoln on 6 June 2026 with lap options of 2.5k, 5k, 10k and 15k, music zones and multiple inflatable obstacles. Family, group and charity discounts are available, plus volunteer benefits.

The National Forest Way Ultra will take place in Burton upon Trent on Saturday 6 June 2026.

A 24-hour relay at Wasing Park, Reading on 6–7 June 2026 with Solo, Pair, and Team entries on an 8 km trail lap, event camping and an event village, plus charity entry options and tiered team pricing.