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Half Marathons Found in the South East

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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

🚀Boosted

Harrold-Odell Country Park - Bedfordshire. 10km, 25km & 50km Trail Races.

Bedford, Bedfordshire
08 Mar 25
£32.00 - £55.00
🚀Boosted

MK Marathon Weekend

Stadium MK, Stadium Way Milton Keynes, BUCKS MK1 1ST United Kingdom
04 May 25 - 05 May 25
£13.05 - £149.59

PHOENIX - NOT the London Marathon Run 2025

Sunbury on Thames, Middlesex
27 Apr 25
£39.95

Surrey Hills Half Marathon

Guildford, Surrey
27 Apr 25
£20.00

Richmond Park April 5k, 10k and Half Marathon Run

London, Greater London
27 Apr 25
£22.00 - £25.00
4.4

Midweek Chasing Numbers May 2025

Egham, Surrey
02 May 25
£24.00 - £34.00

Mid Sussex Marathon Weekend

East Grinstead, Haywards Heath, Burgess Hill
03 May 25 - 05 May 25
£6.59 - £72.60

Worthing Runfest Half Marathon & 10K 2025

Worthing, West Sussex
04 May 25
£34.50 - £39.50
4.8

VICTORIA PARK 5K, 10K & HALF MARATHON

London
04 May 25
£28.00 - £152.00
4.7

MK Marathon Weekend

Stadium MK, Stadium Way Milton Keynes, BUCKS MK1 1ST United Kingdom
04 May 25 - 05 May 25
£13.05 - £149.59

Bank Holiday Madness May 2025

Staines, Middlesex
05 May 25
£24.00 - £34.00

The All Nations 5k, 10k and Half Marathon Run

Windsor, Buckinghamshire
10 May 25
£22.00 - £25.00
4.4

PHOENIX - Rose Run

Dorking, Surrey
10 May 25
£22.00 - £39.95

Collingbourne Races

Crawlboys farm, Ludgershall, SP11 9PR
10 May 25
£21.44 - £32.04
4.7

Battersea Park Half Marathon

London
10 May 25
£37.00 - £162.00
4.8

BEWL WATER 10KM, HALF MARATHON & ULTRA 50KM

Tunbridge Wells, Lamberhurst, East Sussex
10 May 25
£37.36 - £66.01
4.5

Richmond Park May 5k,10k and Half Marathon

London, Greater London
11 May 25
£22.00 - £25.00
4.4

Ranelagh Half Marathon

Richmond, Surrey
11 May 25
£40.00

Sausage Dog Run

Staines, Middlesex
11 May 25
£27.00 - £40.00

PHOENIX Fridays - Prehistoric Friday

Walton-on-Thames, Surrey
16 May 25
£26.00 - £33.00

Colchester Zoo Stampede 10k

Colchester, Essex
18 May 25
£42.00 - £182.00
5.0

PHOENIX - Dragon's Eye Race 1

Cranleigh, Surrey
18 May 25
£27.00 - £40.00
5.0

Easy Does It Run

Staines, Middlesex
18 May 25
£27.00 - £40.00

Wimbledon Half Marathon

London
18 May 25
£39.48
3.6

Run2Paris May 2025

London
22 May 25 - 25 May 25
£950.00

Farmmaggeddon

Hyde Hall Farm, Buntingford, SG9 0RU
24 May 25 - 25 May 25
£33.00 - £165.00

Richmond Park Half Marathon

London
25 May 25
£42.00 - £182.00
4.4

RUN DORNEY 5K, 10K & HALF MARATHON

Windsor, Berkshire
25 May 25
£30.00 - £162.00
4.2

ATW Chiltern Half Marathon & 10K

Bellingdon, Chesham, HP5 2XU
25 May 25
£28.62 - £37.10

Midweek Run - Leon's Birthday Run!

Staines, Middlesex
30 May 25
£24.00 - £34.00

Weybridge 5k, 10k, Half Marathon & Fun Run

Walton-on-Thames, Surrey
01 Jun 25
£14.00 - £152.00
4.8

Circuit Du Sore Legs - part cinq

Wodson Park Sports Centre, Ware, Herts, SG12 0UQ
01 Jun 25
£25.00 - £37.50

Midweek Chasing Numbers June 2025

Egham, Surrey
06 Jun 25
£24.00 - £34.00

Show me the Monet Marathons & Half Marathon

Milton Keynes, Buckinghamshire
07 Jun 25 - 08 Jun 25
£32.99 - £39.99

RUN DORNEY 5K, 10K & HALF MARATHON June 2025

Windsor, Berkshire
07 Jun 25
£30.00 - £162.00
4.2

Magna Carta Summer

Wraysbury Skiff & Punting Club  Riverside  Egham  Surrey TW20 0AA
07 Jun 25
£37.36 - £58.59
4.0

PHOENIX - The Purple Turtle Run

Sunbury on Thames, Middlesex
07 Jun 25
£22.00 - £40.00

The Pink Runner

Staines, Middlesex
07 Jun 25
£27.00 - £40.00

VICTORIA PARK 5K, 10K & HALF MARATHON

London
08 Jun 25
£28.00 - £152.00
4.7

The Summer Lucky Dip Run

Staines, Middlesex
08 Jun 25
£24.00 - £34.00

ATW St Albans Half Marathon #icelollyrun

Verulamium Park, St Albans AL1 2DL
08 Jun 25
£11.66 - £42.40

PHOENIX - Are We There Yet Denbies

Dorking, Surrey
08 Jun 25
£22.00 - £39.95
Showing 81-120 of 244 results
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