Trail Running calendar near Seaford 2025-2026

We have found 263 Trailruns within 80 miles of Seaford. See below where and when you can find the races.

The Goring Gap Trails event, held in Mapledurham near Reading, offers a variety of running and walking challenges, including a 50-mile ultra, a 52K ultra, and a half marathon, alongside walking options of half marathon, full marathon, and a 6-mile walk featuring a river boat crossing. The event is l..

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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..

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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..

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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..

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..

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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..

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..

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..

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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 La Vronnaise will take place in Vron on Monday 25 May 2026.

The Ridgeway Challenge is an 86-mile (139km) trail race along The Ridgeway National Trail, from Ivinghoe Beacon in Hertfordshire to Avebury Stones in Wiltshire. Run by Runaway Racing, it’s a historic journey along a route used for more than 5,000 years. The course is marked with permanent Ridgeway s..

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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..

Beat The Sunset 50km Ultra Marathon takes place in Maidenhead, Berkshire, starting and finishing at Summerleaze Park. The 50-kilometre, multi-terrain course runs a flat, single loop along the Thames Path, Jubilee River and the Green Way, with about 235m of elevation and roughly 75% off-road surface...

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...

June 2026

Surrey Hills Half Marathon is a guided trail half marathon based in Guildford, Surrey, covering about 13 miles. The route travels through the Surrey Hills, with highlights including St Martha's Church and hill, the village of Shere, and views from Newlands Corner and Hackhurst Downs, including secti..

The Sundowner Marathon is a unique running event held in Purleigh, Chelmsford, England, featuring a scenic course that passes along canals, over waterfalls, through vineyards, woodlands, and coastal saltmarshes. This marathon offers a distinctive experience by starting early on a summer evening and..