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Half Marathons Found in the South East
View all ↓Half Marathons In the South East 2025 - 2026
The most comprehensive list of Half Marathons in the South East in 2025 - 2026 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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Race Calendar: Half Marathons In the South East
PHOENIX - Summer Marathon & Half Marathon
Walton-on-Thames, Surrey
Sat 05 Sep 26
£33.50
5.0
The River Run
The Adur Recreation Ground - Shoreham-by-Sea, West Sussex
Sun 06 Sep 26
£32.04
4.4
Bewl Water Autumn
Wadhurst, East Sussex
Sat 12 Sep 26
£37.36 - £66.01
4.6
Flying Scotsman Marathons & Half Marathons
Milton Keynes, Buckinghamshire
Sat 12 Sep 26 - Sun 13 Sep 26
£34.99 - £41.99
Run Dorney Lake Half Marathon, 10k & 5k - September
Windsor, Berkshire
Sat 26 Sep 26
£30.00 - £162.00
4.3
Ealing Half Marathon 2026
London
Sun 27 Sep 26
£42.11 - £44.21
Run Dorney Lake Half Marathon, 10k & 5k - October
Windsor, Berkshire
Sat 03 Oct 26
£30.00 - £162.00
4.3
Hampton Court Palace Half Marathon Presented by Nuun
East Molesey, Greater London
Sun 11 Oct 26
£47.00 - £212.00
4.2
Top Gun 40th Anniversary Marathons & Half Marathons
Milton Keynes, Buckinghamshire
Sat 17 Oct 26 - Sun 18 Oct 26
£36.99 - £42.99
Lee Valley Velo Park - October
London, Greater London
Sat 24 Oct 26
£12.00 - £34.00
4.6
Andover Half Marathon & 12km
14-4 High St, Andover SP10 1LJ
Sun 25 Oct 26
£20.91 - £36.60
Hertfordshire Half Marathon & 10k
Knebworth, Hertfordshire
Sun 01 Nov 26
£40.00 - £212.00
4.5
Run Dorney Lake Half Marathon, 10k & 5k - November
Windsor, Berkshire
Sun 08 Nov 26
£30.00 - £162.00
4.3
Run Dorney Lake Half Marathon, 10k & 5k - December
Windsor, Berkshire
Sat 12 Dec 26
£30.00 - £162.00
4.3
Lee Valley Velo Park - December
London, Greater London
Sat 19 Dec 26
£12.00 - £142.00
4.6
Zodiac Run
Thu 02 Jan 25 - Wed 31 Dec 25
£10.00
Offer
Thanks for booking a Running Bug event through findarace.com - 10% OFF
PHOENIX - Butterfly Run
Walton-on-Thames, Surrey
Sat 15 Nov 25
£22.00 - £40.00
NEW FOREST CENTRAL TRAIL RUN
Brockenhurst, Hampshire
Sat 15 Nov 25
£30.00 - £40.00
5.0
The One in the Park - Victoria - November
London
Sun 16 Nov 25
£26.00 - £35.00
5.0
The Wallop
Farleigh House, Basingstoke, RG25 2HT
Sat 29 Nov 25
£40.00
WITTERING BEACH RUN
Chichester, West Wittering, West Sussex
Sat 29 Nov 25
£30.00 - £40.00
Gremlins Christmas Half & Marathons
Milton Keynes, Buckinghamshire
Fri 05 Dec 25 - Sat 06 Dec 25
£36.99 - £44.99
Salisbury Plain Winter Edition
Old Fowler Barracks, Ludgershall road, Ludgershall, SP11 9RR.
Sat 06 Dec 25
£37.36 - £53.28
4.4
Deja Vu Marathon & Half Marathon
Milton Keynes, Buckinghamshire
Sun 07 Dec 25
£36.99 - £44.99
Die Hard Christmas Jumpers Marathon & Half Marathon
Milton Keynes, Buckinghamshire
Wed 24 Dec 25
£39.99 - £44.99
Showing 201-225 of 225 results