Trail Running calendar near Brentwood 2025-2026

The Die Hard Christmas Marathon and Half Marathon is a festive running event taking place on December 24, 2025, at Caldecotte Lake in Milton Keynes. Participants can choose between a full marathon, consisting of 7.5 scenic laps, or a half m..

Join the Santa Claws 10km, a festive winter multi terrain cross country run at Renegade Brewery on the Yattendon Estate on 24 December. Expect muddier trails than the summer event, a canicross option and a finisher medal plus a beer or alco..

Run on Christmas Day along the Thames at the Christmas Day Cracker Run, a 7 hour time challenge where you choose laps from a 3 km minimum to ultra distances. Finishers get a medal and festive food and treats at race HQ.

Winter X near Meonstoke on 28 Dec offers 10, 30, 50 and 70 km trail routes along the South Downs Way. Enjoy marked courses, checkpoints, chip timing, an event tee and post run food.

Join the Westfield 7.5 km trail race on Sunday 28 December 2025 for a scenic loop past Farbanks Henge and village hamlets. Limited to 50 runners, with marshalled off road course, post race tea and cake and prizes for top male and female.

The Christmas Charity Run at Rathfinny The event takes place on 28 December 2025 at Rathfinny Wine Estate, The Tasting Room, Alfriston, Polegate, BN26 5TU. The run is limited to 75 places and is open to local runners only. Part of the entry..

Join the Layer Twixmas Trail on 28 December for a self guided 5 to 6 mile trail run around Layer de la Haye. Enjoy a Twix, hot drink and cake, optional festive fancy dress with a cash prize and dog friendly fun.

Take on a scenic 10 mile cross country through Hainault Forest with Ilford Athletic Club, three undulating laps across tracks and grass. Friendly club atmosphere, limited entries and post race prizes make it a rewarding winter challenge.

Join the Darklink Lightlink 10 km in Shoreham on 29 December for a flat headtorch run along the Downslink to Bramber and back. Mandatory headtorches, chip timing and a finisher medal add post holiday sparkle.

Finish the year with the River Thames Run, a six hour timed challenge along a flat, scenic out and back route beside the Thames. Choose a 3.28 mile lap, 5k, 10k or go further up to ultramarathon distance while enjoying club facilities.

Kick off the year with Knacker Cracker, a tough 10K trail on Box Hill in Surrey that climbs to Box Hill Fort across steep, scenic tracks. A free Nipper Knacker kids run happens alongside.

Rhino Run in Wraysbury at Wraysbury Skiff and Punting Club is a 6-hour timed running event organized by Circuit Running. The course is an out-and-back with each lap about 3.28 miles. Runners can complete from 5k up to an ultra within the ti..

Join the Penshurst Village Cross Country Run on Sunday 4 January 2026 for mud, hills and community spirit across scenic village trails. Choose a 5 mile race or a 5 mile canicross and enjoy a friendly morning for runners and dogs alike.

Scenic 43 mile ultramarathon from Wendover to Little Venice, London, blending country trails, towpath and roads. Kick off the organiser's Grand Slam series and finish by the Little Venice canal basin for a memorable city welcome.

Event overview Wild Running stages a night trail event at Denbies Wine Estate, Dorking, in the Surrey Hills. The course runs across muddy, rolling hills through the Denbies Estate and is marked for night navigation. Distances offered includ..

Join the G3 trail run series in the Surrey Hills around Newlands Corner with races on 10 Jan, 31 Jan and 28 Feb 2026. Choose 10 km or 15 km courses across scenic, technical trails and save with three race bundle options.

Guided 30 mile trail ultra from St Martha's Hill along the North Downs Way, over Box Hill and past Denbies, led by an experienced coach. Welcoming new ultra runners who can manage 22 mile training and hold about 10 min/mile.

Run a scenic 5.3 km multi terrain lap through Thetford Forest at Brandon Country Park in a timed 6 hour or 4 hour challenge. Limited to 300 entries, finishers earn a bespoke medal and virtual places are available.

The Northampton 10K is a well-organized running event held at Northampton Racecourse Park, featuring a 2.2 km start followed by three laps around the racecourse. The course is accurately measured and takes place on pathway terrain, offering..

Warm up your winter with the Winter Hot Chocolate Series, three friendly cross country races around Bramshill Plantation based at St Neot's School. Enjoy chip timing, themed medals and hot chocolate treats, plus a fun 1 mile kids race.