London South East Spartan Trifecta Weekend

The MacTuff Really Muddy 10k and 5k event in London South East is a challenging and fun muddy run designed for adults and supervised teenagers. The course features varied terrain including mud, water, and obstacles, promising a wet and muddy adventure that tests all abilities. Participants can choose between 5km and 10km distances, with a 3km kids’ challenge also available on the same day. The event offers free parking, free spectator access, and complimentary photos. Entrants receive a MacTuff technical T-shirt and a finisher’s medal, making it a memorable and rewarding experience for individuals and teams alike. Visit the organization's website for the most recent information.

The Dirty Rotten Scramble is Britain's toughest trail run, held in the South of England, specifically in Kent. Established in 2015, this challenging event offers 5k, 10k, and 30k courses featuring rugged terrain with mud, hills, and natural obstacles. Participants will encounter water challenges including wading and swimming, with options available for non-swimmers.

The race is chip-timed, providing official finish times and results, and includes free photos. Amenities include water stations, refreshments, free parking, on-site toilets, and food and drinks at the finish line. Finishers receive a custom medal and a memorable muddy hug, making it a tough but fun outdoor adventure. Visit the organization's website for the most recent information.

The Brighton Fun Inflatable 5K Obstacle Course is set in Stanmer Park, East Sussex, offering a lively and family-friendly atmosphere. Participants can choose from distances of 2.5k, 5k, 10k, or 15k, featuring 15 to 90 inflatable obstacles depending on the course length. The 5K course includes 30 large, bouncy obstacles with exciting names like Start Mountain, The Crawler, and Temple of Doom, spread over two laps of a 2.5k circuit. The event boasts five music zones to energize runners and is suitable for all ages, with children aged 5-15 requiring adult supervision. Additional features include group discounts, charity ticket options, on-site food vendors, and hydration stations, making it a fun and engaging day out for families and friends. Visit the organization's website for the most recent information.

"Fallout 2025" is an obstacle course event held on November 1st at a permanent site featuring challenging natural and man-made obstacles across farmland, woodland, lakes, and bogs. Participants can choose between 6 km and 12 km distances, with the latter consisting of two laps of the 6 km course. The event is suitable for all fitness levels, with no penalties for missed obstacles, and includes features like chip timing, water stations, and a survivor medal. The course is designed to be unpredictable, with the last run ending around 3:30 pm due to fading light. The atmosphere is rugged and adventurous, emphasizing fun, challenge, and resilience. Visit the organization's website for the most recent information.

The Grim Challenge is a renowned winter trail running event held at the Army Tank Training Area in Aldershot, Hampshire. Offering both 4-mile and 8-mile distances, the race is famous for its tough, muddy terrain featuring thick mud, waist-high water, and cold conditions, making it a true adventure run. The course takes place on a military vehicle testing ground, adding to the rugged atmosphere. Participants can expect a challenging yet fun experience in a unique setting. The event provides ample parking with two designated car parks and clear signage to guide runners to the start area. Visit the organization's website for the most recent information.

The UK Wife Carrying Race will take place in Dorking on Sunday 8 March 2026.