Trail Running calendar near Thetford 2026-2027

Night-time Backyard Ultra at Vigo Rugby Club on 16 October 2026 where runners complete repeated 4.167 mile yards each hour until one runner completes one more yard than anyone else. A 7 Hour option runs on the same course.

A **5 km** inflatable obstacle course in Norwich on 17 October 2026, presented as the 2026 edition of the Inflatable 5K. Past participants reported an enjoyable experience and some attended with family members.

A guided 10 mile trail run through canals, reservoirs and past Britain’s oldest post windmill with 170 m ascent and Chilterns views. Includes a run leader, trail technique instruction and a finisher’s medal.

An off-road *10 km* run on bridle paths and woodland tracks near Westacre, with optional obstacles, a ford crossing near the finish, a 5 km water point, refreshments and medals for all; proceeds benefit the Purfleet Trust.

A 30 mile out and back along the River Stort and Lee Navigation on mostly flat grassy and gravel trails, with checkpoints every five miles, electronic timing and a finisher medal; trophies for the top three men and women.

Join this multi terrain timed event at Ferry Meadows in Peterborough to run as many laps as you choose over four or six hours. Reach your own distance goals on a scenic 5.3 km loop with full aid station support.

Experience a timed anti clockwise loop around Canvey Island featuring sea wall paths and coastal trails. This self supported adventure includes a unique pub check point and follows the scenic King Charles III England Coast Path.

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.

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.

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.

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.

A Remembrance Sunday trail event in Brightlingsea on 8 November 2026 with live Last Post and a two-minute silence during the race. A looped course offers 10km, half, marathon and a six hour timed option with on-course aid stations.

A three-day, 84 miles (135 km) ultramarathon along the Ridgeway from Buckinghamshire to Wiltshire, held 13 to 15 November 2026 and based at Tring Rugby Club. Full-package options include accommodation, meals and support; single-day entries..

A 50 mile trail race on 14 November 2026 run as five 10 mile loops within Wendover Woods, featuring about 5600 ft of climb and nine aid stations with full medical cover. It is the final race in the 50 Mile Grand Slam.