Find half marathons in and around London - filter events by date, display on a map or use the advanced search to find your perfect race.
Join March Richmond Park 5k, 10k and half marathon around this gorgeous venue.
Join for this fantastic event. Run Crystal Palace Park 5k, 10k, 15k or half marathon and take on the challenging ups and downs of this course.
A wonderful half marathon distance trail run held entirely within Richmond Park.
Hi there, welcome to TimeOutdoors. 👋 We'd love you to join our community - here's some of what's on offer.
Our weekly newsletter is great for updates on events, adventures and other things going on outdoors. We've got the biggest event listings in the UK so there's sure to be something in it for you.
There's also MyTOD where you can plan, log and share your outdoor adventures and follow those of others. And there's the One Million Challenge which is free to join - just connect your fitness tracker!
Sign up below and we'll send you a welcome email to explain it all. 👍