Trail Running calendar near Shoreham-by-Sea 2026-2027

A Pretty Muddy *5k* obstacle course at Royal Windsor Racecourse featuring climbing, crawling and sliding across grass and tarmac beside the River Thames. Waves run every 15 minutes and participants must be 13 years or older.

Timed 4.2 mile (6.7 km) laps run on the hour at Redbridge Cycling Centre on a 2 km tarmac loop. Competitors must finish each lap within the hour and the last runner standing is declared the winner.

A mixed terrain half marathon and 10k in England on 30th May 2026. Routes mix quiet country roads and off road sections, and the event raises money for local good causes.

A track running event at Wodson Park on 31 May 2026 with distances from 5k to a six hour challenge. Chip timing, aid stations, a bespoke medal and limited entries are provided.

Races at Southampton Common include Half Marathon, 10k, 5k and a junior race on a multi-lap course through woodland, wetlands and parkland, with kilometre markers, marshals and an event village offering food and partner giveaways.

Community fundraising runs at Dunorlan Park offering 3k and 5k routes over mixed grassy terrain with some inclines. The event supports Cancer Research UK with listed entry prices and a minimum fundraising target of £50.

A guided 13 mile trail run around the Surrey Hills starting and finishing in Guildford, with routes that include St Martha's Church, Shere and sections of the North Downs Way. Weekend dates and a midsummer evening option are available.

A timed riverside event on a 5.3 km out and back Thames course where runners choose how many laps to complete within a seven hour limit. Ten pound entry supports the Rays of Sunshine charity and a double sided medal is awarded.

The Sundowner Trail Marathon on 6 June 2026 is an evening 27 mile trail through saltmarsh, canal towpaths, vineyards and forests. Limited to 50 runners, this intimate race offers checkpoints, a finish memento and a bespoke local beer.

A 24-hour relay at Wasing Park, Reading on 6–7 June 2026 with Solo, Pair, and Team entries on an 8 km trail lap, event camping and an event village, plus charity entry options and tiered team pricing.

Backyard Ultra at Chilton Manor Farm in Chilton Candover is a private, sold out backyard ultra on a 6.706 km loop around Godsfield Copse. Runners repeat a 4.16666 mile lap each hour until only one runner completes the next lap.

Run laps through Denbies Wine Estate in the Fire Horse Run, a timed off road challenge on an undulating 5.3 km loop with distances from 5 km to ultra. Pick as many laps as you like within a seven hour window for a flexible, scenic race day.

A three-race Forest Five (mile) series at Jubilee Retreat on 6 June, 4 July and 1 August 2026, with single-race and discounted series entry, age-category aggregate trophies and a third-race ELVIS fixture with team prizes.

The Pretty Muddy 5k at Cassiobury Park is a mixed-terrain obstacle course featuring muddy climbs, crawls and slides. The event is for ages 13 and over, runs in staggered waves, and includes on-site facilities plus fundraising support and a..

A 5k Pretty Muddy obstacle course at Prospect Park, Reading, featuring grass terrain, steep slopes and woodland sections. Obstacles include climbing, crawling and sliding; participants must be 13 or older and events support Cancer Research..

A narrative, self‑navigated trail race of about 7 miles at the Chignal Fete on 06 June 2026, held under UK Athletics rules with a written route description and no course markings.

Water themed trail running on the Isle of Purbeck with four single lap distances from half marathon to 54k. Routes run along coastal cliffs and Purbeck hills and include well stocked aid stations and GPX navigation advice.

Trail running at Wendover Woods on 7 June 2026 offering a half marathon, a 10k and a junior run on hilly forest trails with route maps, an on site cafe and spectator attractions.

A 7 km BS Category fell race around Coombe Hill in Wendover with 220 m of ascent and a steep climb and descent. Entry includes a free pint and a reduced rate for Fell Running Association members.

Trail races at Alice Holt Forest near Farnham offering 10 km and half marathon courses with live chip timing, finisher medal and canicross friendly entries.