Trail Running calendar near Sudbury 2025-2026

Centurion Running's Wendover Woods 50 is a 50-mile ultramarathon held in Wendover Woods, Aston Hill, Halton, Aylesbury. The course comprises five 10-mile forest loops on soft trails and tracks through Wendover Wood, offering runnable descents, steep ascents, and technical sections, with a total elev..

The Rugged Radnage 10K Run, held in the Chiltern Hills near Radnage village, offers a challenging mixed-terrain course featuring roads, trails, footpaths, woods, and fields with notable ascents and descents. The event includes both 5K and 10K distances, with the 5K covering half of the 10K route. It..

The 666 Trail Run, organized by Ashford Tri Club, is a unique trail race held in Kings Wood, Challock, Ashford. Established in 2010, the event features a 6.66-mile course through woodland terrain, offering a challenging and scenic run. The race is known for its "devilishly good" distance and slightl..

The 5th Sundon Saunter is a long-distance walking event held on 16 November 2025. The venue is Barton-le-Clay Village Hall, MK45 4JY (grid ref TL 083 307). Parking is available at the village hall or at Arnold Academy, Hexton Road, MK45 4JZ (grid ref TL 086 305). Entries open on 1 September 2025 an..

The STAR Backyard PEASLAKE is a trail running event organised by Surrey Trek and Run at Peaslake Community Hall, Peaslake, Surrey (GU5 9RR). It is the first of a three-event STAR Backyard series, with Holmbury St. Mary and Shere to follow. The event runs for three hours and asks participants to com..

The event is a trail 10k at Salcey Forest. Entrants must be at least 16 years old on the event date. Entry uses tiered pricing: before 21/10/2025 £16, after 21/10/2025 £21; unaffiliated entrants pay an extra £2. Finishers receive a medal and goodies, with an alternative Big Bear Tree Token offered..

The Dormouse Challenge is a six-hour timed event held at Salcey Forest. Runners complete as many laps of a loop as they wish within the six-hour limit. The loop is 3.5-mile off-road, so total distances depend on laps completed; a marathon requires seven laps plus a little out-and-back, and a half m..

The Zigzag Turkey Trot Challenge is a six-hour timed running event held at the Suffolk Running Centre in Bury St Edmunds. Participants start together and run as many laps as possible on the undulating, multi-terrain Back Quack route, with an aid station available each lap. The event caters to all le..

The RunUk Kingston 10k is a scenic running event starting and finishing at the Kingston Hawker Centre in Surrey. The course takes runners through the streets of Kingston and along the picturesque river towpath, offering a vibrant atmosphere supported by local organizations. Participants receive a fi..

The ATW Wendover Woods Trail Run & Canicross takes place in the scenic Wendover Woods, located at the highest point in the Chilterns near Aylesbury. Participants can choose from a 5K, 10K, or Half Marathon trail run, all set on well-prepared, traffic-free woodland trails offering stunning countrysid..

The The Maverick Exposure Lights Dark Oxfordshire will take place in Stonor on Saturday 29 November 2025. This trail is organized by Maverick Race. You can run between 7 and 17 kilometers.

Box Hill Vertical KM is a guided trail run held around Box Hill near Dorking, Surrey. The course covers about 12.5 miles with around 1000m of elevation, designed to rack up significant height in a compact distance. It traverses woodland, heathland and open fields, with hills that are technical enoug..

The The Maverick Original Oxfordshire will take place in Stonor on Saturday 29 November 2025. This trail is organized by Maverick Race. You can run between 7 and 22 kilometers.

The Riverside Marathon & Half Marathon, organized by Phoenix Running, takes place in Walton on Thames, Surrey, along the scenic River Thames towpath. This UK Athletics certified event features flat, fast, and accurately measured courses with no elevation gain, ideal for runners seeking personal best..

The 12th Colworth Hare and Tortoise Run is a 26.3-mile, five-lap event around the Colworth Estate in North Bedfordshire, hosted by Colworth Striders. The course blends gently undulating trail with unclassified road, including woodland paths with uneven surfaces and roots, narrow sections that limit..

The St Andrews Day Challenge, organized by Zig Zag Running, takes place at Brandon Country Park in Suffolk, located in the heart of Thetford Forest. This multi-terrain event features a 5.3 km loop of gravel footpaths and grass areas. Participants can choose between a 6-hour or 4-hour timed challenge..

Surrey Hills Half Marathon is a guided trail half marathon starting and finishing in Guildford, Surrey. The 13-mile route threads through the Surrey Hills’ scenery, including St Martha’s Church and hill, the village of Shere, and Newlands Corner and Hackhurst Downs, with sections of the North Downs..

Trifarm Winter 10k is the final round of a four-event winter trail run series held at Trifarm, Boreham, Chelmsford, Essex. The 10k route is mostly off-road, on public footpaths and bridleways, and runs clockwise to head away from the river to avoid floods. The start and finish are at the far end of..

The ATW Grafham Water Trail & Canicross is a scenic 10-mile trail running event held at Grafham Water Visitor Centre in Cambridgeshire. The course begins on the iconic dam, offering a fast start, then loops around the reservoir through woodland nature reserves, past Dragonfly Pond and Sanctuary Bay,..

The Bauble Bimble is a festive running event held at Ferry Meadows, a large country park near Peterborough, UK. Participants can choose between a 6-hour or 4-hour timed challenge, running multiple laps of a 5.3 km multi-terrain course featuring gravel footpaths and grass areas. The event welcomes ru..