Welcome to the Lee Valley White Water Centre's Run Fest!

Back again for 2027!

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!

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Charity - Join us in making every stride count by raising money for our partner charity, Alzheimer's 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.

ATW Community

At ATW we think of our participants as a community and we love to hear about the community's dreams and achievements.

If you'd like to share those dreams and achievements you can do so on any of our social media platforms. Equally if you'd like any advice about your upcoming event you will almost certainly find someone who can provide some guidance.

Links to all our social media platforms are at the bottom of the page, including to our ATW Chat Facebook group, which might be the most interactive platform if asking for help.

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.

Description supplied by the event organiser.