Half marathons in South East
Find half marathons in South East in 2025/2026 - filter by date, location or category, display on a map or use the advanced search to find your perfect race.
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Select an event for photos, video, route, location, reviews, entry fees and how to enter.
- Sat 18 Apr 2026
- £23-£35
The London Run | Half Marathon
Not make it into The London Marathon but still fancy getting a super awesome medal based on the iconic race set in the capital city?
- Enter online
- Age 17 & over
- 13.1 miles trail running + 0 ft ascent
- Sun 19 Apr 2026
- £29
Kent Spring Half Marathon
A superbly crafted spring half marathon through some of Kent's prettiest countryside for your racing pleasure... Will you accept the challenge?
- Enter online
- Undulating
- Age 17 & over
- 13.1 miles multi terrain running + 721 ft ascent
- Fri 1 May 2026
- £20-£27
Midweek Chasing Numbers May | Half Marathon
The aim of the midweek runs is to hold events as cheaply as possible in order for people to be able to build their numbers or simply to help people achieve their own goals at an affordable price.
- Enter online
- Age 17 & over
- 13.1 miles trail running + 0 ft ascent
- Sun 3 May 2026
- £45
- 1 charity
ABP Southampton Half Marathon
A single lap of the marathon course which offers a spectacular route including green parks, shoreline and riverside views, starting and finishing at the iconic Southampton Guildhall.
- Chip timing
- Enter online
- Age 17 & over
- 13.1 miles road running + 152 m ascent
- Sun 3 May 2026
- £36-£42
- 3 charities
Worthing RUNFEST Half Marathon
Enjoy a fully closed road race, on flat coastal roads with a spectacular seafront finish. Chance to take home a PB along with the finishers' t-shirt and medal.
- Chip timing
- Enter online
- Flat
- PB
- Traffic free
- Age 17 & over
- 13.1 miles road running + 37 m ascent
- Mon 4 May 2026
- £20-£27
Bank Holiday Madness May | Half Marathon
Come and join the day of running and aim to complete a midweek half marathon within the 7-hour time limit on a scenic course then receive a fantastic medal and goody bag at the finish!
- Enter online
- Flat
- Age 17 & over
- 13.1 miles trail running + 0 ft ascent
- Mon 4 May 2026
MK Half Marathon
- 13.1 miles road running + 518 ft ascent
- Sat 6 - Sun 7 Jun 2026
- £80
- 2 charities
Endure24 | Reading
The UK’s favourite 24-hour trail race! Epic, Brutal, Relentless. Race against the clock to tackle as many laps of the iconic course as you can. How far can you go in 24 hours?
- Dogs allowed at venue
- Entertainment
- Music
- Ballot
- Chip timing
- Enter online
- Event village
- Event expo
- Park
- Free venue entry
- Sustainability policy
- Relay
- Age 18 & over
- 24 hrs multi terrain running
- Sat 13 Jun 2026
- £43-£45
Bewl Water Summer | Half Marathon
Scenic mixed-terrain route around Bewl Water on undulating rural wooded trails and quiet country lanes. The marathon on the same day was previously rated one of the top UK marathons.
- Chip timing
- Enter online
- Hilly
- Age 17-80
- 13.1 miles trail running + 710 ft ascent
- Sun 16 Aug 2026
- £18-£24
Isle of Wight Half Marathon
Challenge yourself on this scenic, undulating road race across the Isle of Wight. Enjoy breathtaking coastal views, peaceful countryside lanes, and amazing local support from start to finish.
- Newcomers
- Chip timing
- Enter online
- Undulating
- Event village
- Age 17 & over
- 13.1 miles multi terrain running + 183 m ascent
- Sat 12 Sep 2026
- £43-£45
Bewl Water Autumn | Half Marathon
Scenic mixed-terrain route around Bewl Water on undulating rural wooded trails and quiet country lanes. The marathon course at the same venue was previously rated one of the top UK marathons.
- Chip timing
- Enter online
- Undulating
- Age 17-80
- 13.1 miles trail running + 710 ft ascent
- Sun 27 Sep 2026
- £31.50-£33.50
Windsor Half Marathon
An inspiring half marathon in Windsor Great Park, starting and finishing on the Long Walk with Windsor Castle as the backdrop - probably the most iconic of all road race finishes in the UK!
- Chip timing
- Enter online
- Undulating
- Traffic free
- Age 17 & over
- 13.1 miles road running + 167 m ascent
- Sun 11 Oct 2026
- £64-£114
- 4 charities
Oxford Half Marathon
Runners will enjoy the fast, flat and beautiful route through University Parks and the historic Oxford City Centre whilst celebrating running and movement with entertainment and cheering fans!
- Carbon neutral
- Venue accessible
- Recycling
- Newcomers
- Entertainment
- Chip timing
- Enter online
- Flat
- PB
- Traffic free
- Fancy dress
- Event village
- Urban
- Park
- Sustainability policy
- Public transport links
- Age 16 & over
- 13.1 miles road running
- Sun 2 Nov
Marlow Half Marathon, The Frankenstein and Marlow 7 | Marlow Half Marathon
- 13.1 miles road running + 340 m ascent
- Sat 8 Nov
GBR Run Bexhill Remembrance Run | Half Marathon
- 13.1 miles road running
- Sat 8 Nov
Five Trails Ultra & Three Trails Half | Three Trails Half
- 13 miles trail running + 407 m ascent
- Sun 9 Nov
Remembrance Day Marathon & Half Marathon | Half Marathon
- 13.1 miles trail running
- Sun 16 Nov
Marden 10K and Half Marathon | Half Marathon
- 13.1 miles road running + 57 m ascent
- Sun 30 Nov
Mapledurham 10 & Half | Half Marathon
- 13.1 miles trail running + 319 m ascent
- Sun 7 Dec
Running GP at Goodwood Motor Circuit
- 5K run
- 10K run
- Half marathon 2
- Marathon
- 50K ultra run
- Sun 7 Dec
Milton Keynes Winter Half Marathon
- 13.1 miles road running + 415 ft ascent