ATW Run Fest at Lee Valley

Get ready for an exhilarating day at the ATW Run Fest at Lee Valley on Sunday, March 22, 2026! Organized by the renowned ATW, this exciting event takes place at the iconic Lee Valley White Water Centre, a celebrated venue from the 2012 Olympics, nestled in the stunning Hertfordshire regional park. Runners of all levels can choose between a 10K race and a half marathon, both designed to be flat, fast, and completely traffic-free, allowing you to soak in the picturesque landscapes as you challenge your limits. The Lee Valley Run Fest is not just about racing; it's a community celebration that promises a fantastic atmosphere, amazing support from friendly marshals, and a well-marked course that has earned rave reviews on Racecheck. Each finisher will be rewarded with a custom-designed medal and delicious snacks at the finish line, making every step worth it. Plus, this year, you can make your run even more meaningful by supporting Alzheimer’s Research UK, with opportunities to fundraise while enjoying the thrill of the race. Spaces are limited, so secure your spot today and join us for an unforgettable day of fitness, fun, and camaraderie at the ATW Run Fest!

Welcome to the Lee Valley White Water Centre's Run Fest! Back again for 2026! Get ready to lace up your running shoes and experience the thrill of racing through stunning scenery in Hertfordshire's picturesque regional park. Join us for an unforgettable day of running as we host both a 10K and a half marathon event. Starting and finishing at the iconic Lee Valley White Water Centre, a 2012 Olympic venue, you'll embark on a journey through the breathtaking landscapes that surround the area. What makes this event truly special? The course is carefully designed to be traffic-free, flat, and fast, giving you the perfect opportunity to not only conquer your personal best but also to immerse yourself in the beauty of nature. Whether you're a seasoned runner or just starting out, there's something for everyone at the Lee Valley Run Fest. Water stations will be conveniently located along the route to keep you hydrated, with refreshments and snacks awaiting you along with your well-earned medal at the finish line. This hugely popular event features a well-marked course, amazing support from our friendly marshals, and consistently earns 5-star reviews on Racecheck. All finishers will receive a custom-designed medal along with tasty finish line snacks and goodies! Don't miss your chance to be part of this exhilarating experience. Spaces fill up fast, so secure your spot now to guarantee your place on the starting line. Whether you're aiming for glory or simply looking to enjoy a scenic run, the Lee Valley Run Fest promises an unforgettable day of fitness and fun. See you at the starting line! For the latest event updates - follow Run Fest at Lee Valley on Facebook       Read reviews on Charity - Join us in making every stride count by raising money for our partner charity, Alzheimers Research UK - your run will not only challenge your limits but also change lives, one step at a time, for a cure. Opportunities to donate and fundraise will appear at checkout.   ATW Transfer & Refund Policy At ATW, we understand that sometimes plans change. While we do not offer refunds or transfers to another person, we provide a hassle-free event transfer option for those unable to attend their booked event. If you are unable to participate in your scheduled event for any reason—including injury, illness, pregnancy, bereavement, or other unforeseen circumstances—you can transfer your entry to any future ATW event. There is no proof required, we trust you! Even better news, transfers can be made all the way up to 48 hours before your original event date. Event Organiser ATW was established in 2011 by James Shipley. We have now become a national events company in the UK, specialising in Running, Triathlon, Duathlon, Aquathon, Cycling, Swimming and all permutation of swim-bike run events. With over 40,000 entries a year ATW has become a firm favourite amongst people who are determined to Dream, Believe and Achieve.