Sat 29 Jul 2023 Waltham Cross, Hertfordshire, UK

ATW Lee Valley Sundowner | Half Marathon

Introducing the ATW Sundowner in the beautiful Lee Valley Regional Park, this awesome event will start with a late afternoon 10k and a Half Marathon, before ending with a sunset siesta!

  • Sat 29 Jul 2023
Lee Valley White Water Centre, Waltham Cross

Half Marathon



Age 17 & over

  • 13.1 miles road running


The Lee Valley Regional Park is a picturesque regional park in Hertfordshire, situated next to the Lee Valley White Water centre, an Olympic 2012 venue. After completing the race, head next door to the White Water Centre and join us on the terrace for an ice cold drink, food, great music and some chilled vibes whilst you sit back, relax, and watch the sun go down. The event will host a 10K and a half marathon. Both events start on the Showground before heading out to the beautiful regional park. Both races return to the showground where the 10k will finish, while the Half Marathon heads out again for a slightly extended second lap before finishing back at the showground. The course is traffic free, flat and fast so not only can you smash your personal best but you can also enjoy fantastic scenery whilst you are doing it! The Sundowner Half Marathon and 10K have a maximum time restriction of 3 hours, after which there may not be marshals and time keepers available. Races at this venue are extremely popular so enter now to avoid missing out.

This event is part of ATW Lee Valley Sundowner.

Event details

  • All fitness levels
  • Event village
  • Newcomers


  • Paid parking


  • Flat
  • Marshals
  • PB
  • Traffic free


  • Age 17 & over
  • Enter online

Other races at event

  • Sat 29 Jul 2023
  • #1 of 2
Lee Valley White Water Centre, Waltham Cross




Age 15 & over

  • 10 km road running