Trail Running calendar near Chalfont Saint Peter 2026-2027

A 42 km trail to road marathon across the South Downs featuring an ascent of Ditchling Beacon and a final 6 km into Hove Lawns on the Brighton Marathon course.

A cupless trail half marathon through Thetford Forest on mixed hard-packed and grassy paths, with podium trophies, manual timing, and a minimum age of 17.

Scenic mixed terrain races along the Thames at Remenham Farm in Henley on Thames. Options include a Half Marathon, a 10K and a Junior Race with marked trails, marshals, chip timing and post race goodies.

A circular 54-mile ultra and a 26.2-mile marathon from Brixworth Country Park through Northamptonshire trails, roads and canal towpaths with real-time GPS tracking.

A 50 mile point-to-point race along the South Downs Way from Worthing to Eastbourne, featuring about 5,700 ft of climb, seven staffed aid stations, mandatory kit checks and a 13 hour finish limit.

Four 50 mile Centurion Running events from 10 April to 13 November 2027 make up the 50 Mile Grand Slam.

A family friendly inflatable obstacle fun run in Huntingdon on 10 April 2027 with 2.5k laps, multiple distances, music zones, a finisher's medal and on course water.

A 26.2 mile race covering the final section of the Rose of the Shires Ultra, mixing trails, roads and canal towpath. The route features two staffed checkpoints, real time GPS tracking and transport from Brixworth Country Park to the start.

Races on the Thames Path at Wraysbury Skiff & Punting Club in Runnymede offering Marathon, Half Marathon and 10 km courses with marked turnaround points and stocked checkpoints.

A 28 mile run along the traffic free Brampton Valley Way, staged as a Leicestershire versus Northamptonshire contest with 100 places from each end. The route includes two dark tunnels, feed stations every 4.5 miles and a 7 hour cut off.

Haughley Festival of Running at Haughley Park, Suffolk offers 5k, 10k, half, marathon and ultra distances over pathways and some trails, with on-site parking, an aid station and event medals.

Forest trail runs at High Lodge in Thetford Forest on 11 April 2027 with 5 km, 10 km and a new half marathon options. The chip timed event is fully supported and all finishers receive a medal, merchandise, snack and drink.

A trail weekend at Cowdray Estate, West Sussex offering five distances from 12 km to 110 km, low technical difficulty, an event village with expo, and optional camping and race support.

A 50K ridge-line trail ultra across the Chiltern Hills from Berkhamsted Castle to Wendover, fully marked with three main aid stations and a 9-hour time limit.

Windsor 50 Ultra Challenge on 17 April 2027 offers 50 km, 25 km and 10 km looped routes from Windsor Racecourse with full support and marked trails.

Guided marathon through the Chiltern Hills with qualified run leaders, checkpoints, and a wooden finisher medal on 17 April 2027.

A scenic 10 km trail race in the Nene Valley, starting and finishing at KC Active in Kings Cliffe with a fully marked circular route and on-course aid station.

Ibstone Circle on 18 April 2027 offers multi-terrain 5 km and 10 km routes through Wormsley Estate plus a Run in Colour for children aged 4 to 11. Fees vary by age and affiliation.

A multi-distance canal and riverside ultraseries based at Streatley-on-Thames, featuring TR250, TR150 and TR100 with GPS tracking, checkpoint support and required navigation using provided GPX files and maps.

A family-oriented inflatable obstacle course and fun run in St Albans on 24 April 2027, with 2.5k, 5k, 10k and 15k options, music zones, on-course water and finisher medals. Group, family and charity discounts are offered.