Trail Running calendar near Hertfordshire 2025-2026

We have found 355 Trailruns within 80 miles of Hertfordshire. See below where and when you can find the races.

East Hanningfield Trail Marathon is a 95% off-road, circular trail race around the village of Danbury, starting and finishing at East Hanningfield Village Hall. It is described as a narrative race with no marshals or arrows, requiring compe..

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.

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.

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..

Run the G3 Surrey trail series at Newlands Corner, Guildford and Hound House Road on 10 Jan, 31 Jan and 28 Feb 2026. Choose 10km or 15km over scenic forest trails with hills, mud and tricky descents for a rewarding challenge.

Scenic 43 mile ultra from Wendover to London's Little Venice that blends country trails, roads and canal towpath into a tough but rewarding city finish. GPS tracking and checkpoints keep you covered on this classic test of endurance.

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..

Timed multi lap run at Brandon Country Park in Thetford Forest. Choose a four or six hour session and complete as many 5.3 km loops as you like. Aid station, finisher medal and virtual entries make this a scenic, flexible challenge.

Run scenic Hampshire trails at Winchester Trail Run with 21km or 12km routes including a climb to Farley Mount. Chip timing, water stations and medals await and the event is plastic free.

Take part in Festive 5 on 11 Jan 2026, a 5 mile off road run along the River Avon through Fladbury and Lower Moor. Organised by Friends of Fladbury, this fundraiser offers free cake, spot prizes and supports local community projects.

Guided 10km trail run at Hankley Common with wide views and a stop at the Atlantic Wall replica. Enjoy a friendly group paced by an experienced coach with kit trials and optional post run refreshment.

Join the Windmill Way Wander on 17 January in Bury St Edmunds for scenic road running through quaint villages and rolling hills, with distances from 5k to ultra. Limited to 300 entries, the event offers friendly aid stations and a welcoming..

Dirt Run is a trail running series across two rounds in Northamptonshire at Irchester in January and Brigstock in February. Tackle mixed trails and a notable hill, pick short or longer distances and earn a unique finisher medal.

Take on the Benfleet 15, a 15 mile multi terrain challenge at Hadleigh Country Park on 18 January 2026, with muddy off road trails, a sea wall stretch and Olympic mountain bike sections. Chip timing, a bespoke medal and event photos make it..

Take on the Arundel and SDW Winter Trails 2026, a point to point off road run from Heyshott to Arundel by Arundel Castle. Choose marathon or 15 mile routes through rolling fields and riverside trails and cross a scenic suspension bridge.

Take on a three hour trail challenge from Holmbury St Mary and complete as many 5 km laps as you can across scenic Surrey Hills trails and the climb to Holmbury Hill. Entry includes a bowl of chilli or curry and a headtorch is required.

Take on the Crocodile Challenge at Ryton Pools Country Park, a timed six hour loop where you run as many laps as you like around scenic pools. Canicross and rucking welcome with dogs on short leads; finishers get a medal and a portion of fe..

Join the OMG Run at Bawsey Country Park on 24 Jan 2026 for timed trail distances from 5k to ultra in a six hour format with extra lap options. Limited to 100 runners, the undulating sand and gravel course offers lap aid and finisher medals.

Run a scenic, flat trail through Alexandra Gardens near Windsor Castle with 10K and half marathon options. Chip timed, marshalled and offering free photos, post race goodies and a tech tee deal.

Tackle scenic, eco friendly trail races through Ashdown Forest at Pippingford Park, with 10 and 5 mile options over rolling, hilly trails. Enjoy forest views, supportive volunteers, bespoke medals and cash prizes for top finishers.