Trail Running calendar near Harwell 2026-2027

Take in riverside views at the Riverside Marathon and Half Marathon in Walton on Thames on 28 November 2026. Flat, UKA certified towpath course, limited places, medals for all finishers and virtual entry available.

Scenic riverside marathon and half marathon on a flat UKA certified towpath from Walton on Thames to Hampton Court and back. Lapped format with finisher medals and virtual entries.

A guided 30 mile trail run from Haslemere along the Serpent Trail and Sussex Border Path, featuring Blackdown, the Temple of the Winds and varied heathland and woodland. Group format with route support and trainer guidance.

A hilly trail 10 km through the woodland and parkland of Hughenden Manor near High Wycombe, fully waymarked with a water station at 5.3 km and on-site facilities at the National Trust venue.

A guided trail run on Box Hill that gains about 1000 m over 12.5 miles, featuring technical climbs, scrambling and varied terrain. Group paced for sustained trail running ability with parking at Stepping Stones Car Park.

Run along the scenic Dorset coast at the Bournemouth Coastal TEN. Choose between a 10 Mile or 10K route starting from Hengistbury Head, featuring a flat, traffic-free path with sea views.

Trail races in Swanage along the Jurassic Coast Path with 10K, half, marathon and ultra distances, electronic timing and fully marked courses. Optional coach transport is available and standard entry terms include a 30 day refund window.

A **50 km** trail ultramarathon from Dorking along the Greensand Way into the Surrey Hills, featuring a 5 mile loop and climbs over Leith Hill, Holmbury Hill and Pitch Hill. The route is fully signed, supported and electronically timed.

Partridge in a Pear Tree kicks off a festive running series, with a challenging off-road course in the grounds of Pengethley Manor. Runners can choose their distance, from a 5k to an ultra, and have seven hours to complete it. The event als..

A seasonal ten mile multi terrain race in Peacehaven with farm tracks, quieter roads and a notable hill around mile six. The event includes fancy dress, recycled finisher medals, charity partners and photos supplied by Sussex Sports Photogr..

New Forest Xmas Trails offers festive trail races from Holmesly Campsite in the New Forest. Distances range from 15 km to a 50 km ultramarathon on fully marked heath and woodland trails; opt to plant a tree instead of a medal.

Join the Chasewater Christmas Pudding Dash at Chasewater Country Park for festive fun with 10k, 5k and a Junior Run on mostly flat reservoir trails. Enjoy medals, photos and prizes including best dressed fancy dress while supporting Shelter..

A 10 mile loop around Grafham Water starting on the dam, offered as a standard run and a canicross. Scenic reservoir views, woodland trails, finisher medals, on site camping and options for dog friendly entries.

Dash through the festive trails at the National Trust's Tinkley Gate in this family-friendly 5 km off-road event. Wear your best Santa suit, bring your dog on a lead, and support the Allsorts charity. All paces are welcome for a fun, commun..

The 2 Turtle Doves is a Christmas-themed running event where you choose your distance, from 5k to Ultra, and have 7 hours to complete it on an off-road course at Pengethley Manor. It's open to walkers and runners, with virtual participation..

The 3 French Hens Run is a festive off-road event in Ross-on-Wye, part of a 12-day Christmas series. Choose from 5k to Ultra distances and tackle a hilly vineyard course within a 7-hour limit. A virtual run option is also available for glob..

The 4 Calling Birds Run is a festive off-road event at Pengethley Manor in December 2026. Participants can choose from five distances, from a 5k to an ultra, with a 7-hour time limit. A virtual option is available, and all paid finishers re..

A 200 mile continuous trail run looping around the South of England from Juniper Hall. Runners have up to 96 hours, live tracking, and access to three major aid stations with crew support and drop bags.

The 5 Golden Rings Run is a festive off-road event with a challenging course at Pengethley Manor. Choose from five distances, including an ultra, and enjoy a generous seven-hour time limit. You can also join in virtually from anywhere in th..

Part of a festive Christmas series, this event offers a choice of distances on a tough off-road course at Pengethley Manor. Walkers and runners have seven hours to complete their chosen race, with a virtual option also available.