Trail Running calendar near Flitwick 2026-2027

ATW Grafham 5K and 10K at Grafham Water on 25 October 2026 features 5K and 10K races alongside the ATW Grafham Duathlon. Camping is available and the event supports Alzheimer’s Research UK.

Looped races in Chalfont St Peter offering on the day choices from 7 km up to ultra marathon distances, with a single aid station, marked trails, drop bag access and medals for top finishers.

Experience a festive night run through the woodland trails of Irchester Country Park. Choose between 5k and 2k distances featuring themed medals, fancy dress, and spooky marshals for a memorable Halloween experience.

A single-loop 50K trail race around the Chilterns starting and finishing in Berkhamsted. Fully marked route along The Ridgeway and Chiltern Way with three aid stations, mandatory kit requirements and a 9 hour time limit.

Experience a festive 6.66 km Halloween trail run starting and finishing at a local brewery in Chelmsford. Participants enjoy a costume focused event with medals and drinks for finishers in a social atmosphere.

Experience a night trail run through the ancient Alice Holt Forest with 5 km, 10 km, or 15 km lap-based routes. Navigate tree-lined avenues by head torch and enjoy fire pits and refreshments at the finish line.

Trail races at Wendover Woods on 1 November 2026 include marathon, half marathon, 10k and a junior run on hilly, multi terrain forest trails with route maps and a six hour cut off.

A ten mile off road trail run in Stonehouse on 1st November 2026 featuring an uphill opening on Horsemarling Lane, muddy undulating trails, a finisher medal, and a 2 hours 30 minutes cutoff; canicross runners are welcome.

Shepshed 7 is a measured two-lap 7 mile race through the private grounds of Garendon Park on Sunday 1 November 2026. The event is chip timed and fully marshalled, with commemorative t-shirts, category prizes and a separate fun run.

Experience a unique 5 mile out and back run through the 422 meter Oxendon Tunnel. Choose between a Thursday night or Friday morning session and enjoy an atmospheric route that requires a head torch to navigate the darkness.

Two days of marathon and half marathon races around Caldecotte Lake in Milton Keynes on 6 and 7 November 2026, with multi-lap clockwise courses, on-course water and toilets, enforced time limits, and bespoke finisher medals.

Take on flat, scenic laps along the Thames towpath in Walton on Thames with flexible starts and distances from 5 km to ultra. Limited places, aid stations, digital results and medals make this a friendly, festival style challenge.

Experience a night time trail run through the Chiltern Hills at Stonor Park. Choose from three fully marked routes and enjoy a unique atmosphere in an estate home to fallow deer and wallabies.

Nuclear Fallout runs muddy obstacle courses on farmland and woodland near Brentwood, Essex, with options from 6 km to 24 km plus, chip timing, many natural and man-made obstacles, and finisher medals and photos.

Experience a scenic trail run through the Bedfordshire countryside starting from Leighton Buzzard. Choose between a classic half marathon or a metric distance featuring canal towpaths, woods, and rolling hills.

Experience a 16 mile multi terrain personal challenge through the beautiful Leicestershire Wolds. This inclusive event welcomes runners walkers and dogs with legendary home made crumbles waiting at the finish line.

A trail running event at Stonor Park on 7 November 2026 with three routes through the Chilterns. Distances range from 7 km to 22 km, with steep sections and outposts offering snacks and hydration for the longer routes.

A night-time trail run around Winchester using sections of the South Downs Way, Pilgrims Trail and Itchen Way. Two marked distances are offered with mandatory headtorches, on site registration and a bag drop.

Experience a flat trail run through the heart of royal Berkshire with chip timed results and free race photos. Choose between a 10k or Half Marathon distance starting from the scenic Alexandra Gardens in Windsor.

A seven hour Time Challenge along the River Thames in Egham offering distances from 3 km to 50 km, commemorative medals and distance pins, a goody bag with a vegan option, and a two minute silence observed during the event.