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Half marathons in London in September 2025

Find half marathons near me in London in September 2025 - search by date or place, display on a map or use the advanced search to find your perfect race.

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Click an event for full event details, location, route, sustainability, what's included and how to enter.

The perfect finale to the summer racing season! The course is fast and flat with tremendous riverside views, starting and finishing in the historic ancient Market Place, Royal Borough of Kingston.
  • Sun 6 Oct
  • £42.50-£44.50
  • Sun 6 Oct
  • £42.50-£44.50
Kingston upon Thames, UK

Kingston Half Marathon

The perfect finale to the summer racing season! The course is fast and flat with tremendous riverside views, starting and finishing in the historic ancient Market Place, Royal Borough of Kingston.

  • Newcomers
  • Dogs allowed
  • Entertainment
  • Music
  • Chip timing
  • Enter online
  • Flat
  • PB
  • Fancy dress
  • Event village
  • Urban
  • Age 17 & over
  • 13.1 miles road running
Entries closed
A stunning central London half marathon taking in four Royal Parks and some of the capital's world-famous landmarks on closed roads. Charity places now available for 2024.
  • Sun 13 Oct
  • FREE-£41.60
  • Entries closed
  • Sun 13 Oct
  • FREE-£41.60
  • Entries closed
London, UK

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. Charity places now available for 2024.

  • Families
  • Trees not tees
  • Wheelchair users
  • Recycling
  • Newcomers
  • Plastic bottle free
  • Entertainment
  • Music
  • Ballot
  • Chip timing
  • Enter online
  • Undulating
  • Traffic free
  • Fancy dress
  • Event village
  • Urban
  • Park
  • Sustainability policy
  • Public transport links
  • Age 17 & over
  • 13.1 miles road running
The One by the Canal is an intricate trail run starting in Cowley and following the Grand Union Canal with its beautiful nature and finishing in Watford. Go for this scenic half marathon and enjoy!
  • Sun 10 Nov
  • £33-£35
  • Sun 10 Nov
  • £33-£35
Uxbridge, UK

The One by the Canal

The One by the Canal is an intricate trail run starting in Cowley and following the Grand Union Canal with its beautiful nature and finishing in Watford. Go for this scenic half marathon and enjoy!

  • Newcomers
  • Chip timing
  • Enter online
  • Event village
  • Sustainability policy
  • Age 17 & over
  • 13.1 miles trail running
Explore Richmond Park whilst completing your favourite distance. The route will guide you through different terrain of this mesmerising park - join this park run turned trail run!
  • Sun 1 Dec
  • £33-£35
  • Sun 1 Dec
  • £33-£35
Richmond, UK

The One in the Park | Richmond | Half Marathon

Explore Richmond Park whilst completing your favourite distance. The route will guide you through different terrain of this mesmerising park - join this park run turned trail run!

  • Chip timing
  • Enter online
  • Age 17 & over
  • 13.1 miles trail running
The Kew Half Marathon starts inside Kew Gardens and every runner will receive a fantastic medal, a technical running t-shirt (male & female cut) and free entry into the gardens!
  • Sun 30 Mar 2025
  • £40.50-£52.50
  • 3 charities
  • Sun 30 Mar 2025
  • £40.50-£52.50
  • 3 charities
Richmond, UK

gofundme Kew Gardens Half Marathon

The Kew Half Marathon starts inside Kew Gardens and every runner will receive a fantastic medal, a technical running t-shirt (male & female cut) and free entry into the gardens!

  • Chip timing
  • Enter online
  • Flat
  • Traffic free
  • Age 17 & over
  • 13.1 miles road running
A spirited Central London run with live music, upbeat DJs, street-dancers and inspiring themes on a landmark-packed route with closed roads. Charity places available for 2025.
  • Sun 6 Apr 2025
  • £10-£65.99
  • 31 charities
  • Sun 6 Apr 2025
  • £10-£65.99
  • 31 charities
London, UK

London Landmarks Half Marathon

A spirited Central London run with live music, upbeat DJs, street-dancers and inspiring themes on a landmark-packed route with closed roads. Charity places available for 2025.

  • Families
  • 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
  • Sustainability policy
  • Public transport links
  • Age 17 & over
  • 13.1 miles road running
One of the capital's favourite running events thanks to its fusion of running, music and culture and part of a weekend-long festival taking over the borough. Charity places now available for 2025.
  • Sun 18 May 2025
  • FREE-£40
  • 27 charities
  • Sun 18 May 2025
  • FREE-£40
  • 27 charities
London, UK

Hackney Half Marathon

One of the capital's favourite running events thanks to its fusion of running, music and culture and part of a weekend-long festival taking over the borough. Charity places now available for 2025.

  • Chip timing
  • Enter online
  • GPS tracking
  • Undulating
  • PB
  • Traffic free
  • Age 16 & over
  • 13.1 miles road running
A team of 5. A half marathon every day for 4 days. You have just Run2Paris! This is your next great running adventure where you'll camp under the stars on a road trip like no other.
  • Thu 22 - Sun 25 May 2025
  • £250-£1,200
  • Thu 22 - Sun 25 May 2025
  • £250-£1,200
London, UK

Run2Paris

A team of 5. A half marathon every day for 4 days. You have just Run2Paris! This is your next great running adventure where you'll camp under the stars on a road trip like no other.

  • Newcomers
  • Enter online
  • GPS tracking
  • Fundraising required
  • Hilly
  • Urban
  • Rural
  • Public transport links
  • Age 18 & over
  • 4 days multi terrain running
The Big Half promises a party atmosphere on a landmark-packed, half marathon route which follows some of the famous marathon course in reverse!
  • Sun 7 Sep 2025
  • FREE-£56.50
  • 2 charities
  • Sun 7 Sep 2025
  • FREE-£56.50
  • 2 charities
London, UK

The Big Half

The Big Half promises a party atmosphere on a landmark-packed, half marathon route which follows some of the famous marathon course in reverse!

  • Families
  • Trees not tees
  • Wheelchair users
  • Recycling
  • Newcomers
  • Entertainment
  • Music
  • Chip timing
  • Enter online
  • Flat
  • Traffic free
  • Fancy dress
  • Event village
  • Event expo
  • Urban
  • Sustainability policy
  • Age 17 & over
  • 13.1 miles road running
A team of 5. A half marathon every day for 4 days. You have just Run2Paris! This is your next great running adventure where you'll camp under the stars on a road trip like no other.
  • Thu 11 - Sun 14 Sep 2025
  • £250-£1,200
  • Thu 11 - Sun 14 Sep 2025
  • £250-£1,200
London, UK

Run2Paris

A team of 5. A half marathon every day for 4 days. You have just Run2Paris! This is your next great running adventure where you'll camp under the stars on a road trip like no other.

  • Newcomers
  • Enter online
  • GPS tracking
  • Fundraising required
  • Hilly
  • Urban
  • Public transport links
  • Age 18 & over
  • 4 days multi terrain running
  • Sun 22 Sep
Richmond, UK

Richmond Park Half Marathon

  • 13.1 miles trail running
  • Sun 29 Sep
London, UK

Ealing Half Marathon

  • 13.1 miles road running
  • Sun 29 Sep
London, UK

Wimbledon Common 10K & Half Marathon | Half Marathon

  • 21.4 km trail running
  • Sun 6 Oct
Richmond, UK

Thames Meander Autumn | Half Marathon

  • 13.1 miles trail running
  • Sun 6 Oct
Richmond, UK

Thames Meander Autumn | 10K

  • 10 km trail running
  • Sun 6 Oct
London, UK

Victoria Park 5K, 10K & Half Marathon | Half Marathon

  • 13.1 miles road running
  • Sat 12 Oct
London, UK

Lee Valley VeloPark Races | Half Marathon

  • 13.1 miles road running
  • Sun 13 Oct
Richmond, UK

The Richmond Autumn Riverside Run | Half Marathon

  • 13.1 miles multi terrain running
  • Sun 20 Oct
Bath, Somerset, UK

Bath & Bristol Railway 10K, Half, 25K, Marathon and 50K | Half Marathon

  • 13.1 miles road running
  • Sun 20 Oct
Richmond, UK

Richmond Park October 5K, 10K and Half Marathon | Half Marathon

  • 13.1 miles multi terrain running
  • Sun 20 Oct
London, UK

Battersea Park Half Marathon

  • 13.1 miles road running
  • Sun 27 Oct
Richmond, UK

Richmond Park Half Marathon

  • 13.1 miles road running
  • Sun 3 Nov
Richmond, UK

Richmond Half Marathon

  • 13.1 miles road running
  • Sun 3 Nov
Richmond, UK

London MoRun | Half Marathon

  • 13.1 miles road running
  • Sun 3 Nov
London, UK

Run London Victoria Park Half Marathon

  • 13.1 miles road running

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