Trail Running calendar near Portsmouth 2025-2026

The Mendip Marauder is a challenging ultra running event held in Somerset, England, featuring two distances: a 30-mile and a 50-mile race. The 50-miler covers the entire Mendip Way, starting in Frome and finishing at Uphill Sands Beach, while the 30-miler begins in Wells and follows the latter part..

Henley River Half Marathon, 10k & Juniors August 2025 is a RunThrough UK event held in Henley-on-Thames, UK. The course offers a fast scenic trail around Henley-on-Thames, starting and finishing by Temple Island Meadows, the official start line for the Royal Henley Rowing Regatta. Distances availabl..

London Backyard Ultra is an endurance running event held at Frylands Wood Scout Outdoor Centre in Croydon, London. The event features a 4-mile (about 6.4 km) lap every hour, continuing until only one runner remains. The wooded venue offers a woodland course with a supportive, community atmosphere ty..

Southampton Running Festival, hosted by RunThrough UK, returns on Sunday 31 August 2025 in Southampton. The event takes place at The Avenue, Southampton SO15 7NN, with the start and finish on Southampton Common, a Site of Special Scientific Interest ideal for running. Distances on offer include 5K,..

The T184 is a challenging 184-mile self-supported adventure race following the River Thames from its source near Cirencester to the Thames Barrier in London. Participants navigate through scenic towns, villages, and iconic London landmarks, completing the course within 76 hours. The route alternates..

Set in the Surrey Hills, the Shere 42k, 21k & 10k Multi Terrain Event offers three trail running options from the picturesque Shere Recreation Ground. The 10k covers woodland and rolling trails with a 123m ascent; the 21k climbs about 543m across North Downs and Ranmore; the 42k marathon lifts aroun..

The South Coast Challenge will take place in Eastbourne on Saturday 6 September 2025. You can run between 16 and 63 miles.

The St Albans Stampede - 12hr Enduro is an ultra marathon held in the scenic Hertfordshire countryside, featuring parts of Heartwood Forest and Nomansland Common. Participants aim to cover the greatest distance by running multiple four-mile loops within a 12-hour period. The event accommodates solo..

The Andover Trail Marathon, held in North Hampshire at Kings Road, Enham Alamein, offers both a full marathon (26.2 miles) and a half marathon (13.1 miles) through scenic trails. The marathon route follows the Testway up to Coombe Gibbet, Hampshire's highest point, then returns via the Conholt estat..

The Hackpen Hill 10k Trail Run is an annual off-road event held near Weir Farm, Broad Hinton, Swindon, Wiltshire. Celebrating its tenth year, the race features a challenging one-lap course that traverses farm tracks, fields, mud, and rolling hills alongside the historic Ridgeway trail. Suitable for..

The Beast is a challenging 13-mile race hosted by Poole AC, showcasing the stunning landscapes of Dorset. The course begins at Corfe Castle Common, traversing through Worth Matravers and along the coastal path, offering breathtaking views. Runners will encounter a few hills on their return to Corfe...

The Carnival Chase is a scenic running event held in Warminster Town Park, featuring a 10K, 3K, and a new 1.2K Family - Wheelchair - Buggy Fun Run. The course winds through country lanes, tracks, and trails, starting and finishing near the boating lake, with no stiles but some kissing gates. The eve..

The Coln Valley Charity Trail Run, held near Coln St Aldwyns and Bibury, offers 2km, 5km, and 10km trail distances suitable for all ages and abilities. Set in the scenic Coln River valley, the event features mostly grassy, undulating terrain with a mix of cross-country elements, including hay bale h..

The Jurassic Coast Ultra Run is a challenging 30-mile trail run along the stunning Jurassic Coast and Isle of Purbeck in Dorset, UK. Starting and finishing at Studland Bay beach, the route features hilly terrain and scenic landmarks such as Corfe Castle, Kimmeridge Bay, Chapman's Pool, Durlston Head..

Bradenham Blast is a trail running event in the Chiltern Hills at Manor Farm, Bradenham, near High Wycombe, UK. Boondock Events offers 5km, 10km, and a new half-marathon for 2025. The courses are hilly, scenic, and suitable for many abilities, weaving through tranquil beech woodland and rugged trail..

SOX 10km is a 10km multi-terrain race organized by Racing Line Running, taking place on September 7, 2025, starting and finishing at the South Oxfordshire Brewery taproom in Ipsden, Oxfordshire. The course blends private terrain, trails, woodlands, fields and local roads, with around 60% off-road an..

The Phil and Bonnie Bounder 6K Forest Run takes place in Moreton Forest, Dorset, with the Race HQ at Moreton Village Hall. This scenic 6-kilometer run follows woodland paths through the beautiful forest, finishing with the last kilometer on a quiet country road. The event is open to participants age..

The Westonbirt Arboretum Summer 2025 running event takes place at the National Arboretum in Westonbirt, Tetbury, UK. Participants can choose from distances including 1 mile, 5km, 10km, and a half marathon, all set on a scenic course featuring over 2,500 tree species across five national collections...

The Sufferings is a multi-distance trail event in West Sussex, organized by Sussex Trail Events. The race begins at Washington Village Hall in Washington, RH20 4AP, and offers Half Marathon, Full Marathon, and a 39 Mile Ultra. Runners tackle the steep, rugged tracks of Chanctonbury and Cissbury ring..

The Farnham Pilgrim Marathon is a scenic and challenging running event held in Farnham, Surrey, starting from The Sands on Seale Road. The marathon offers spectacular views across the Surrey Hills, known for its hilly and multi-terrain course that tests runners' endurance. Alongside the full maratho..