Rush Weekend - Nuclear Races

Essex, United Kingdom • 10-11 May 2025

Rush Weekend by Nuclear Races is an award-winning obstacle race event held at the Secret Bunker Estate in Essex. Scheduled for May 2025, it offers two main course distances: a 6km race suitable for participants aged 13 and over, and a 12km race for those 16 and older. The 12km+ British OCR Championships also take place on an extended 12km course with over 60 mandatory obstacles.

The courses feature a mix of natural and man-made challenges, including the Deathslides, Para-plunge zip-lines, and Swing A Ding obstacles around a lake zone. The event is chip-timed, non-lap, and encourages participants to attempt as many obstacles as they wish, with no penalties for skipping. Participants receive a finisher medal, top, and refreshments. Visit the organization's website for the most recent information.

Always visit the organization's website for the most recent information!

Race information

12 km
6 km

Mud & Obstacle runs nearby

The London South East Spartan Trifecta Weekend takes place at Pippingford Park, East Sussex, known for its rolling hills, scenic countryside, and challenging terrain. This event features multiple race distances including the Sprint (5K with 20 obstacles), Super (10K with 25 obstacles), Beast (21K with 30 obstacles), and the Ultra (50K with 60 obstacles), alongside a kids' race and a 12-hour Hurricane Heat challenge. The course is noted for its tough obstacles and the likelihood of getting wet, offering a dynamic and exhilarating experience. Participants can race individually or as teams, enhancing camaraderie and competition in a vibrant outdoor atmosphere. Visit the organization's website for the most recent information.

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The Windsor Fun Inflatable 5K Obstacle Course is set to take place at Windsor Racecourse in Berkshire. This exciting event features multiple distances: 2.5k, 5k, 10k, and 15k, with participants tackling inflatable obstacles—ranging from 15 to 90 depending on the distance chosen. The 5K course includes 30 large, bouncy obstacles spread over two laps, enhanced by five music zones to energize runners. Suitable for adults and children aged 5 and up (with adult supervision), the event offers a fun, family-friendly atmosphere with food vendors, hydration stations, and spectator areas. Group and charity discounts are available, making it a lively and inclusive day out. Visit the organization's website for the most recent information.

Fallout 2025 by Nuclear Races is a challenging winter obstacle race held on undulating farmland and woodland featuring natural and man-made obstacles, lakes, bogs, and their signature #lovemud. Participants can choose between a 6km or 12km lapped course, both including the iconic Deathslide obstacle. The event welcomes all fitness levels and ages, with chip timing and water stations provided.

Racers run in mixed waves of both distances and can attempt as many obstacles as they wish. Finishers receive a Nuclear Rush survivor medal and a hot cup of tea. The event emphasizes environmental care by offering an option to forgo the finisher top. Visit the organization's website for the most recent information.

The Grim Challenge is a rugged trail running event held at the Army Tank Training Area in Aldershot, Hampshire. Established in 2003, it offers two distances: a challenging 8-mile course and a shorter 4-mile option. The race is known for its natural obstacles, including thick mud, waist-high water, and cold, wet conditions typical of a December winter day.

Unlike obstacle races, the Grim Challenge features no artificial structures; instead, runners navigate terrain shaped by army vehicles and weather. The event fosters an adventurous atmosphere with over 1,000 participants annually, providing medals, beanies, energy products, and full medical support. It also supports the Combat Stress charity for veterans’ mental health. Visit the organization's website for the most recent information.

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