Trail Running calendar near Guildford 2025-2026

We have found 358 Trailruns within 80 miles of Guildford. See below where and when you can find the races.

Join the North Downs 50 Ultra Challenge on Sat 1 Aug 2026 for scenic runs from Guildford across Surrey hills and the North Downs Way. Choose 10 km, 25 km or 50 km routes with full support, night markings and medical cover.

Run the Vanguard Way Marathon or Half in Croydon on 02/08/2026 and enjoy a scenic route through parkland, woods and rolling countryside. Finish with a medal, goody bag and post race treats to celebrate your achievement.

Take on the MTC Thames Challenge, a four day 184 mile multi stage endurance race along the scenic Thames Path from the source to the Thames Barrier. Included hotels and main evening meals connect the stages for a supported ultra experience.

Tackle the MTC Cotswold Ultra, a scenic 57 mile point to point along the Thames Path from Kemble to Oxford, with a bespoke medal and MTC head visor for all. Classic Cotswold views and trophies for winners make this a memorable challenge.

Take on the MTC Oxford Ultra, a 49 mile point to point along the Thames Path from Oxford to Henley. Expect scenic riverside trails, three support checkpoints and challenging self sufficient ultrarunning with a bespoke finisher medal.

Scenic 7 hour timed run along the River Thames on 7 Aug 2026 lets you choose any distance from 3 km to ultra. Finishers get medals and distance pins, with aid stations, cafe and vegan goody bags.

Take on the 47 mile MTC Windsor Ultra along the scenic Thames from Henley to Kingston, testing endurance with three aid stops and rolling river views. Finishers get a bespoke medal and choice of tech shirt, mug or hat.

Tackle ATW Odyssey12 at Riverside Park, St Neots, a multi terrain lap event where solo runners, pairs or teams rack up 5.3 km laps against the clock. Enjoy festival vibes with live music, food, kids activities and an Odyssey medal for finis..

Take on the North Downs Way 100, a continuous 103 miles from Farnham to Ashford with 11,000 ft of climb and a 30 hour cutoff. Mostly trail, marked route and stocked aid stations lead to a memorable finish at Julie Rose Stadium.

UTMB Index

Join the Ramsbury Gold 10km at Ramsbury Brewery on 9 August for a scenic multi terrain trail run through woodland and footpaths, with a canicross option. Finishers get a medal, a pint cup and a free drink while supporting Brighter Futures.

Enjoy a scenic undulating 10k through quiet lanes around Mount Ephraim Gardens with views of rolling Kent hills. Includes a bespoke medal, free garden entry and supports Oasis Domestic Abuse Services.

Join Saturn Too Midweek Medal Madness on 14 August 2026 for a seven hour timed challenge along the Thames with distances from 3 km to ultramarathon. Finish 3 km to earn a medal and goody bag with drink stops on course.

Choose 50k or 100k through scenic Northants and Leics, following much of the Harborough Round and passing charming villages and historic sites. Well supported with aid stations, finishers medals and a true trail challenge.

The Black Bull 15 is a charity trail run held near the Black Bull pub in Chelmsford. It offers two distances: a 15-mile trail route and a 15km option for shorter, faster runs, jogs or walks. The course uses varied trail surfaces through par..

Experience the Two Tunnels in Bath, a unique run through two lit, surfaced railway tunnels and rolling paths. Options span short Colourburst runs up to marathon and 50 km distances, with proceeds supporting Sustrans.

Take on the Henfield Half Marathon for a scenic off road 13.1 mile challenge along riverbank and a disused railway, finishing at Henfield Leisure Centre. Enjoy on site facilities, refreshments and a finishers medal.

Run the Southampton Running Festival on 16 August 2026 at Southampton Common with 5K, 10K, half marathon and junior races. Scenic laps through woodland, ponds and parkland, plus an event village and a focus on sustainability.

Run through Alexandra Gardens with views of Windsor Castle at the Windsor Trail Run on 30 August 2026. Choose a 10K or half marathon, enjoy chip timing, free race photos and a lively event village.

Muntjac 15 links five woodlands via hilly single track and forest paths for a scenic but testing trail run. Join fellow runners on 30 August 2026 for a memorable off road challenge.

Enjoy a scenic trail marathon and half at Woldingham School with rolling valley and North Downs views on a 13.1 mile loop. Perfect for runners who love woods, ridge paths and rewarding post race treats.