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Half Marathons Found in the South East

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Half Marathons In the South East 2026 - 2027

The most comprehensive list of Half Marathons in the South East in 2026 - 2027 and South of England including Half Marathons in London, Southampton, Oxford, Reading, Portsmouth, Brighton and Slough. Find your perfect race!

Top Tip: Viewing this page in the default “Featured view” will show you all the Best Half Marathons in and around the South East. If you’re ready to set yourself a challenge right now then switching to “Bookable view” will show you those that can be booked instantly and securely through Find A Race. Guarantee your place today and get training :-)


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London

Race Calendar: Half Marathons In the South East

🚀Boosted

Independence Weekend Runs: 5k, 10k, Half, Full & Ultra Marathons

Winchester, Hampshire
Sat 04 Jul 26 - Sun 05 Jul 26
£39.95
🚀Boosted

Winchester Half Marathon

Winchester City Centre
Sun 20 Sep 26
£10.82 - £40.53
5.0
🚀Boosted

Wizz Air Ealing Half Marathon 2026

London
Sun 27 Sep 26
£50.63 - £52.63

Hertfordshire Half Marathon & 10k

Knebworth, Hertfordshire
Sun 07 Nov 27
£33.00 - £38.00
4.5

Run Gatwick Half Marathon & 5k

Crawley, West Sussex
Sun 21 Nov 27
£26.00 - £36.00
5.0

World Cup 2026 Run

Thu 11 Jun 26 - Sun 19 Jul 26
£16.00

Offer

Thanks for booking a Running Bug event through findarace.com - 10% OFF

Mystery Marathon & Half Marathon (CANCELLED)

Milton Keynes, Buckinghamshire
Thu 25 Jun 26
£17.50 - £34.99

Wind in the Pillows Marathons & Half (CANCELLED)

Milton Keynes
Thu 25 Jun 26
£34.99 - £41.99

The Maverick North Downs Trail 2026

Cranleigh, Surrey
Sat 27 Jun 26
£9.10 - £92.84

Richmond Park Half Marathon

London
Sun 28 Jun 26
£40.00
4.4

Chiltern Ridge Half Marathon

Aylesbury, Buckinghamshire
Sun 05 Jul 26
£40.00
4.3

The Railway Run Marathon, Half Marathon & 50km

Milton Keynes, Buckinghamshire
Sat 18 Jul 26
£39.99 - £49.99

Formula One Marathons, Half Marathon & 50km

Milton Keynes, Buckinghamshire
Sun 19 Jul 26
£42.99 - £46.99

Top Gun 40th Anniversary Marathons & Half Marathons

Milton Keynes, Buckinghamshire
Sat 17 Oct 26 - Sun 18 Oct 26
£39.99 - £52.99

GBR Run Bexhill Remembrance Run

Bexhill on Sea, East Sussex
Sat 07 Nov 26
£7.50 - £30.00
4.7
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