Half marathons in London in October 2025
London is home to some of the UK’s most iconic half marathons, attracting runners from across the world to race through the capital’s historic streets and famous landmarks. From Tower Bridge to Buckingham Palace, a London half marathon is more than just 13.1 miles — it’s an unforgettable experience.
The city offers something for everyone, whether you’re chasing a personal best on a fast, closed-road course or taking in the atmosphere of charity-focused runs through London’s parks and riverside routes. With excellent transport links, world-class organisation and huge crowds lining the streets, it’s no wonder these events sell out fast.
On this page you’ll find a full list of upcoming London half marathons, along with details on how to get involved. If you’d like to run for charity, take a look at our charity half marathons in London page and if you'd like to explore races further afield, head to our half marathons guide. Otherwise, scroll down to discover the best half marathons London has to offer and start your journey to the start line.
Find events near me in October 2025 - filter by date or location, display on a map or use the advanced search to find your perfect race.Filter by month
Filter by place
MapEvent listings
Select an event for photos, video, route, location, reviews, entry fees and how to enter.

- Sun 5 Oct
- £43-£45
Thames Meander Autumn | Half Marathon
Stunningly scenic riverside route along the Thames towpath. Flat, fast and very runnable with great runner support. The marathon on the same day was previously rated one of the top 10 UK marathons.
- Chip timing
- Enter online
- Flat
- Age 17 & over
- 13.1 miles trail running + 300 ft ascent

- Sun 12 Oct
- £10-£40
Royal Parks Half Marathon
A stunning central London half marathon taking in four Royal Parks and some of the capital's world-famous landmarks on closed roads.
- Families
- Trees not tees
- Wheelchair users
- Recycling
- Newcomers
- Plastic bottle free
- Entertainment
- Music
- Ballot
- Chip timing
- Enter online
- GPS tracking
- Flat
- PB
- Traffic free
- Fancy dress
- Event village
- Urban
- Park
- Sustainability policy
- Public transport links
- Age 17 & over
- 13.1 miles road running + 88 m ascent
- Sun 12 Oct
The Richmond Autumn Riverside 10K and Half Marathon Run | Half Marathon
- 13.1 miles multi terrain running
- Sun 19 Oct
Richmond Park October 5K, 10K and Half Marathon | Half Marathon
- 13.1 miles multi terrain running
- Sat 25 Oct
Epping Forest Wildwood Trail Series Half Marathon and 10K | Half Marathon Canicross
- 13.1 miles trail running + 904 ft ascent
- Sat 25 Oct
Epping Forest Wildwood Trail Series Half Marathon and 10K | Half Marathon
- 13.1 miles trail running + 904 ft ascent