Trail Running calendar near Guildford 2025-2026

The Collingbourne Races, held at Crawlboys Farm in Ludgershall, offer a scenic off-road running experience through the beautiful Collingbourne woods. Featuring a half marathon and a 10km race, the course includes bridle paths, woodland tracks, and single-track trails, making it suitable for runners..

Run to the Sea Brighton is a 50 km ultramarathon on a multi-terrain point-to-point course from Horsham's Christ's Hospital to Hove Lawns, Brighton. The route blends trails, rolling downs, and a coastal promenade, offering scenic views of the South Downs and sea. The event is described as stunning, w..

Chiltern Hills 100K is a TRA-licensed 100-kilometre ultramarathon organized by Runaway Racing. The next edition takes place in May 2026, starting and finishing in Chesham, Buckinghamshire, with the event base at Chesham Guides HQ in Lowndes Park. The anticlockwise route traces beloved Chilterns trai..

The Halstead & Essex Marathon, established in 1995, is an annual running event held in North Essex, starting at Halstead Leisure Centre. Celebrating its 30th year in 2026, the marathon features a scenic course on low-traffic roads through rolling hills, woods, and farmlands, offering a picturesque a..

The Oliver Fisher 10k & 5k is scheduled for 10/05/2026 at Milton Creek Country Park in Sittingbourne, Kent. The event offers three race options: 10k 5k Junior Run The course is off-road on stone trail and follows the route used in 2025. The race raises funds for The Oliver Fisher Special Care..

The Compton Marathon & 16 Mile Challenge, part of the Compton Downland Challenge, is hosted by Compton Harriers Running Club in Compton, Berkshire. The event offers two routes: a marathon and a 16-mile challenge, both starting from the village recreation ground by the Village Hall (HQ). With a 7-hou..

Jurassic Coast Challenge is part of Ultra Challenge Series along Dorset’s World Heritage coastline. Distances: 100km, 75km, ~50km and ~25km, plus a Weymouth Marathon loop and Bridport 10K. The course runs from Corfe Castle via Swanage, Lulworth Cove and Durdle Door, with Weymouth at halfway, then on..

North Downs Way 50 is a 50-mile point-to-point ultramarathon along the North Downs Way National Trail, from Farnham, Surrey to Knockholt Pound on the outskirts of Greater London. With about 5,600 feet of elevation gain, the mostly off-road route traverses iconic chalk downs, including Box Hill, and..

The Reigate Priory Park 10K is a scenic charity fun run held in Priory Park, Reigate, Surrey. The course features a 250-meter start plus four laps on an accurately measured, gently undulating cross-country terrain surrounded by lush greenery. Suitable for runners of all levels, the event fosters a f..

Farmmageddon is an endurance running event held at Hyde Hall Farm, Buntingford, SG9 0RU. Returning for its second year, the event features a challenging 100-mile race completed over 32 hours across two days. The course consists of a 5.3 km loop combining trail, grassland, and some tarmac paths, suit..

London 2 Brighton Ultra Challenge is Ultra Challenge’s flagship Capital-to-Coast trek from Richmond to Brighton. On 23-24 May 2026, it offers a full 100km route with ~1500 m of ascent, plus shorter options of about 50km and 25km, including a Brighton 25km loop. The course traverses Surrey and Sussex..

RunThrough Trails presents The Fox, a quintessentially British trail running experience set in the picturesque Surrey countryside. On Saturday 23 May 2026, the event offers three distances: 20K, 41K, and 62K, with all routes finishing at Burys Field in Godalming. Courses launch from Burys Field, Wes..

Seven Sisters Half Marathon is a scenic, single-loop trail race through the South Downs National Park, starting and finishing at Helen Garden in Eastbourne. Runners follow the South Downs Way from Eastbourne to Friston Forest, traverse woodland trails, pass the Seven Sisters, and return over Beachy..

South Downs 50k is a 50 km point-to-point trail race from Falmer to Eastbourne, largely along the South Downs Way through the South Downs National Park and finishing over the Beachy Head cliffs. The route includes about 3,600 ft of ascent and descent, 99% runnable trail with some farm tracks and for..

Grand Union Canal Race (GUCR) is a 145-mile non-stop ultramarathon along the Grand Union Canal Towpath from Gas Street Basin, Birmingham to Little Venice, London. Dubbed “The Long Run” and regarded by many as Britain’s premier ultra, the race follows a way-marked, flat towpath through urban and rura..

The Castle Trails 30km is a scenic point-to-point trail race in Kent, launching in 2026 as part of the Three Castles 50km Ultra weekend. Starting at Little Fant Farm near Maidstone and finishing in Tonbridge, the course follows the River Medway, passing historic sites like East Farleigh’s stone brid..

The Three Castles 50km Ultra Marathon is a scenic race held in Kent, England, starting in Rochester and finishing at Tonbridge athletics track. The flat course follows the River Medway, passing three medieval castles, charming villages, and lush countryside along the Medway Valley Walk. Runners expe..

The Ridgeway Challenge is an 86-mile (139 km) point-to-point trail running race along the full length of The Ridgeway National Trail. The next edition is scheduled for 30th May 2026. The route runs from Ivinghoe Beacon in Hertfordshire to the Avebury Stones in Wiltshire and is described as followin..

The Beat The Sunset 50km ultramarathon takes place on Saturday 30 May 2026 in Maidenhead, with the venue listed as Summerleaze Park, SL6 8SP. The race distance is 50 km on a single-lap course. The route is described as flat and multi terrain, using the Thames Path, Jubilee River and the Green Way...

The Circuit du Sore Legs is a unique running event held at Wodson Park Sports and Leisure Centre in Ware, Hertfordshire. Participants run on a traffic-free 400-meter athletics track, with distances ranging from 5k to a 6-hour challenge, including half marathon, full marathon, and 50k ultra options...