London

The Royal Parks—Hyde Park, Regent’s Park, Greenwich Park—host the majority of London’s fun runs, with Hyde Park alone serving as the venue for over a dozen annual events. If you’re running on a weekend, you’ll cross paths with one of London’s 100+ free parkruns happening every Saturday morning at 9am. Driving to central London events means paying the congestion charge plus searching for parking—the Tube and Overground reach every major venue. After finishing, runners gather at park cafés or head to nearby pubs. Many charity events require fundraising minimums, so read the registration details carefully before committing.

Getting around: Transport for London covers Tube, buses, and rail. Citymapper app for route planning.

Visitor info: Visit London