Trail Running calendar near Sudbury 2026-2027

A scenic trail half marathon on National Trust land at Dunstable Downs covering 21.2 km and 450 m elevation. The fully marked course has two aid stations, GPX files available and event facilities at the National Trust centre.

Cock-a-doodle Dawdle is a lap-based trail event at Hyde Hall Farm on 26 June 2027 offering distances from 5 km to ultra marathon on a 5.3 km loop, with on-course aid, secure parking and finishers' medals.

A women's ultra trail event in the Surrey Hills with out and back routes from Denbies Wine Estate. Three course options, no cut-off times on course, and policies to support pregnant and parenting participants.

A 21.1 km off road trail race on 5 July 2026 along The Ridgeway between Wendover and Princes Risborough, with fully marked navigation, two aid station visits and a 4 hour limit.

A flat 10 km trail run through Thursley National Nature Reserve near Thursley, Surrey. Group runs include dusk and night options with headtorch guidance, an entry fee of £22 per person, and kit and torch support available.

The Race for Life Pretty Muddy Stevenage will take place in Stevenage on Sunday 11 July 2027. You can run 5 kilometers.

A mixed-terrain trail event along the Thames at Remenham Farm on 4 September 2027, offering a half marathon, a 10K and a junior race for under 11s with chip timing and themed medals.

Guided 10 km trail run around Silent Pool near Guildford, following parts of the North Downs Way and Netley Heath forest. Sessions run at dusk or at night with headtorches in a led group and a recommended pace of about 10 min per mile.

An 81 mile circular ultra on the historic Bunyan Trail in Bedfordshire with a 24 hour time limit and fully waymarked route. The event includes seven stocked aid stations, drop bag service, medical support and live tracking; finishers within..

A 100K trail ultra around the Chiltern Hills on an anticlockwise loop from Chesham, passing Ashridge Estate, Ivinghoe Beacon, Whiteleaf Hill and Bledlow Ridge. Fully marked route with GPS tracking, checkpoints, aid stations and mandatory ki..

A guided 30 mile trail run from St Martha's Hill exploring the Surrey Hills and Box Hill with an experienced ultra runner and coach. Group pace, recommended 22 miles training, cost £55 and an alcohol free beer may be available.

A guided 12.5 mile trail run around Box Hill that gains about 1000 metres of elevation across woodland, heathland and open fields. Group pace with technical climbs and scrambling and a chance of an alcohol free beer at the finish.