0223
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 :-)
Popular & Featured
Race Calendar: Half Marathons In the South East
🚀Boosted
Whitstable & Herne Bay 1.5k, 5k, 10k & Half Marathon MoRun
Herne Bay, Kent
01 Nov 25
£12.00 - £30.00
5.0
🚀Boosted
RUN Battersea Park Half Marathon
Battersea Park next to the Bandstand - SW11 4NJ
16 Nov 25
£33.11
Newbury Racecourse Half Marathon, 10k & 5k - August
Newbury, Berkshire
08 Aug 26
£27.00 - £152.00
4.9
Run Dorney Lake Half Marathon, 10k & 5k - August
Windsor, Berkshire
08 Aug 26
£30.00 - £162.00
4.3
Lee Valley Velo Park - August
London, Greater London
15 Aug 26
£12.00 - £142.00
4.6
Run Dorney Lake Evening Runs 10k & 5k August
Windsor, Berkshire
26 Aug 26
£30.00 - £142.00
5.0
Henley River 10k, Half Marathon & Junior Race September 2026
Henley-on-Thames, Oxfordshire
05 Sep 26
£7.00 - £142.00
4.5
Bewl Water Autumn
Wadhurst, East Sussex
12 Sep 26
£37.36 - £66.01
4.6
Run Dorney Lake Half Marathon, 10k & 5k - September
Windsor, Berkshire
26 Sep 26
£30.00 - £162.00
4.3
Run Dorney Lake Half Marathon, 10k & 5k - October
Windsor, Berkshire
03 Oct 26
£30.00 - £162.00
4.3
Hampton Court Palace Half Marathon Presented by Nuun
East Molesey, Greater London
11 Oct 26
£47.00 - £212.00
4.2
Lee Valley Velo Park - October
London, Greater London
24 Oct 26
£12.00 - £142.00
4.6
Hertfordshire Half Marathon & 10k
Knebworth, Hertfordshire
01 Nov 26
£40.00 - £212.00
4.5
Run Dorney Lake Half Marathon, 10k & 5k - November
Windsor, Berkshire
08 Nov 26
£30.00 - £162.00
4.3
Run Dorney Lake Half Marathon, 10k & 5k - December
Windsor, Berkshire
12 Dec 26
£30.00 - £162.00
4.3
Lee Valley Velo Park - December
London, Greater London
19 Dec 26
£12.00 - £142.00
4.6
Zodiac Run
02 Jan 25 - 31 Dec 25
£10.00
Offer
Thanks for booking a Running Bug event through findarace.com - 10% OFF
VICTORIA PARK 5K, 10K & HALF MARATHON
London
04 Oct 25
£28.00 - £162.00
4.7
Kingston Half Marathon 2025
Kingston upon Thames, Greater London
05 Oct 25
£39.50
5.0
Richmond Park Half Marathon
London
12 Oct 25
£42.00 - £182.00
4.4
Back to the Future 40th Anniversary Marathons & Half Marathons
Milton Keynes, Buckinghamshire
18 Oct 25 - 19 Oct 25
£38.99 - £44.99
PHOENIX - Pink Flamingo Run
Walton-on-Thames, Surrey
25 Oct 25
£22.00 - £40.00
River Thames Half Marathon 2025
Walton-on-Thames, Surrey
26 Oct 25
£34.00
4.5
PHOENIX - Butterfly Run
Walton-on-Thames, Surrey
15 Nov 25
£22.00 - £40.00
Salisbury Plain Winter Edition
Old Fowler Barracks, Ludgershall road, Ludgershall, SP11 9RR.
06 Dec 25
£37.36 - £53.28
4.4
Showing 201-223 of 223 results