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.

Run Bath's Two Tunnels, passing through Devonshire and Combe Down tunnels, with distances from 500 m up to 50 km plus relays. Support Sustrans and enjoy unique underground scenery and a lively festival atmosphere.

BigMud Trails EARTH at Queen Elizabeth Country Park is a scenic single lap through the Meon Valley with two tough climbs up Butser Hill. Choose 16 mile, marathon or 50 km distances, enjoy on course support and plant a tree instead of a meda..

Take on the Hadleigh Legacy 10k at Hadleigh Country Park on 22 Feb 2026, a single lap off road trail with hills, mud and lovely views. Enjoy race photos, a bespoke medal and prizes for top finishers.

Enjoy a crisp Winter Trail Run through Gatton Park with a scenic 5K loop or a 10K double lap, plus a Canicross race for runners with dogs. Fast, friendly and compact, the event includes a finish medal, refreshments and prebookable parking w..

Run the North Downs Ridge 50k, a scenic trail ultra from Denbies Wine Estate near Dorking. Enjoy rolling Surrey countryside, four aid stations, medical cover and a UTMB qualifier for runners after a classic long day on trails.

Guided 10 km trail runs on Thursley Common across heath, bog and the boardwalk voted Britain's Favourite Path. Friendly, non competitive group runs include sunset and night options with headtorches.

Join the G3 Series at Newlands Corner, Guildford on Saturday 28 February 2026 for scenic 10 km and 15 km runs through Surrey countryside. Single entries and series bundles are available; register by 26 February.

Tackle a guided 30 mile trail on the South Downs Way from Harting Down, West Sussex, passing Beacon Hill and the ancient yews of Kingley Vale. This friendly group run from Running Adventures offers a scenic, supportive challenge for experie..

Explore scenic coastal paths around Chichester Harbour with views of Bosham Hoe, Itchenor and the South Downs and a short foreshore crossing at low tide. Choose 16 km or 21 km routes with canicross options and a friendly race day vibe.

March 2026

Choose a scenic 10k or half marathon around Pitsford Water starting at Brixworth Country Park on 1 March, with fully marshaled trails and lakeside views. Enjoy water stations, medals and free photos while supporting local foodbanks.

The Imber Ultra is a scenic 33.5 mile multi terrain trail across Salisbury Plain, starting in Westbury and following the Imber Range Perimeter Path. Now in its 12th year, this charity fundraiser promises tough trails and sweeping views.

Up on the Downs, hosted by Tri-Counties Trail Running, takes place at Breamore House near Salisbury. Runners can choose from 5k, 10k (about 11.5k), or a half marathon, all starting and finishing at Breamore House. The route is mainly trail,..

Run a scenic 10 km along the Thames and Jubilee River through Windsor, Dorney and Eton, finishing by the Windsor & Eton Brewery. Multi terrain course with a medal and post race pint makes this a perfect social and club outing.

Join a guided 10 km trail from Silent Pool, Albury along the North Downs Way through Netley Heath to Shere, with sunset or headtorch night options. Led by a qualified guide, the run features kit trials and sometimes an alcohol free beer.

Join the Humanity Direct Amersham Ultra on 7 March for scenic footpath and bridleway routes of 10 km, 25 km or 50 km starting at Dr Challoner's School. Run or walk to fundraise for Humanity Direct and earn a finisher medal.

Take on the stunning Sussex coastal trails at Eastbourne on 7 March 2026 with 10K, half marathon, marathon and ultra options that pass the Seven Sisters cliffs. Expect challenging chalk and forest terrain, great views and full event support..

UTMB Index

Join Thunder Races at Harrold Odell Country Park for scenic 25 km and 50 km trail runs through woodland and countryside. Marked routes, aid stations and finish medals make it a welcoming challenge for trail runners of all levels.

UTMB Index

Run through ancient New Forest woodlands, heath and meadows with 10km, 15km and 22km route options. Dog friendly, with canicross categories, chip timing and medals.

Brutal at Chawton is a raw trail run across muddy woodland, water filled craters and steep sided valleys with tight technical trails. Options for 5 km or 10 km include dedicated canicross waves so bring your dog and expect big challenges.

Tackle the Leith Hill Half Marathon, a scenic 13.1 miles cross country run from Dorking to Leith Hill Tower and back with about 1,800 feet of climbing. Enjoy stunning views, a commemorative medal and a full cooked breakfast at the finish.