Find Your Race
LONDON RUNNING EVENTS
5K, 10K, 10 mile and half marathon races in London's greatest parks, plus trail and canal-side adventures beyond the city. Filter the field and lock in your next start line.
OneRace organises fast, friendly, traffic-free running events across London and the South East. Our One in the Park series brings 5K, 10K, 10 mile and half marathon races to the capital's most iconic green spaces — Regent's Park, Hyde Park, Greenwich Park, Victoria Park, Richmond Park and Battersea Park.
Every race is chip timed, fully marked and marshalled, with pacers at selected events, water on the course, a finisher's medal and race photography included. Whether it's your first 5K, a Sunday-morning 10K PB attempt or your next half marathon, there's a London start line here for you.
RACES BY DISTANCE
- — fast, flat park loops for beginners and speed sessions
- — the classic distance, paced for PBs
- — the step up before the half
- — park, trail and canal-side 13.1s
Escape the city streets on OneRace trail and canal-side routes, including the Grand Union Canal Half Marathon. Soft ground, big skies and quiet miles — with the same chip timing, marshalling and finisher's medal as our park races.
Trail events suit road runners looking for a new challenge as much as seasoned off-road racers, with clearly marked courses and generous cut-offs.
RACES BY DISTANCE
- — flat, scenic 13.1 miles on the towpath
- — off-road loops close to London
OneRace triathlons cover everything from first-timer sprints to standard distance racing, plus aquathlon, aquabike and duathlon options for athletes building towards a full multisport day.
Expect safe, well-supervised swims, marshalled bike courses and fast run legs, with British Triathlon standard race organisation throughout.
RACES BY DISTANCE
- — the perfect first multisport race
- — run-bike-run and swim-run formats
London Running Events
5K, 10K, 10 MILE & HALF MARATHON RACES IN LONDON
OneRace organises chip-timed running events across London's most iconic royal parks and green spaces. Our race calendar covers 5K and 10K races in Regent's Park, Hyde Park, Greenwich Park and Battersea Park, plus 10 mile and half marathon distances in Victoria Park and Richmond Park.
Every course is traffic-free, fully marshalled and accurately measured, with pacers on the bigger distances, water on course, race photography, a finisher's medal and refreshments at the line. Beyond the capital we also run trail and canal-side races — the Grand Union Canal Half Marathon from Cowley to Watford, the Marlow trail races and multisport events on the River Thames at Henley.
Whether it's a first 5K, a 10K personal best or a step up to your first half marathon, you'll find a start line here. Entries are handled securely online and places on the most popular London races regularly sell out.
RACE CALENDAR
- Henley Triathlon & Open Water Swim – September 2026Henley-on-Thames
- Marlow Trail Half Marathon & 10K – September 2026Henley Road, Marlow
- Hyde Park 5K & 10K – September 2026Hyde Park
- Regent’s Park 10K – October 2026Regent's Park
- Greenwich Park 5K & 10K – October 2026Greenwich Park
- Regent’s Park 10K – November 2026Regent's Park
- Grand Union Canal Half Marathon – November 2026Cowley
- Victoria Park Half Marathon, 10 Mile & 10K – November 2026Victoria Park
- Richmond Park Half Marathon & 10K – November 2026Richmond Park
- Regent’s Park 10K – December 2026Regent's Park
- Regent’s Park 5K & 10K – December 2026Regent's Park
- Battersea Park 5K & 10K – December 2026Battersea Park
- Regent’s Park 10K – January 2027Regent's Park, London
- Regent’s Park 10K – January 2027Regent's Park
- One in the ParkVictoria
- Regent’s Park 10K – February 2027Regent's Park
- Regent’s Park 10K – March 2027Regent's Park