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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

Midweek Medal Madness Run April 2025

Staines, Middlesex
11 Apr 25
£24.00 - £34.00

PHOENIX - The Golden Potion Run

Sunbury on Thames, Middlesex
11 Apr 25
£22.00 - £39.95

PHOENIX - The Fortitude Potion Run

Sunbury on Thames, Middlesex
12 Apr 25
£22.00 - £39.95

Ultra X Spring Trail Series (25km, 50km, 75km)

Liphook, Hampshire
12 Apr 25
£35.00 - £125.00

Ten In Ten - Day 1 2025

Staines, Middlesex
12 Apr 25
£27.00 - £40.00

Kent Spring Marathon & Half Marathon

Sandyacres Sports Club, Sandyhurst Lane, Ashford, Kent, TN25 4PE
13 Apr 25
£30.94 - £40.48
5.0

PHOENIX - The Gauntlet Potion Run

Sunbury on Thames, Middlesex
13 Apr 25
£22.00 - £39.95

Ten In Ten - Day 2 2025

Staines, Middlesex
13 Apr 25
£27.00 - £40.00

Richmond Park Half Marathon

London
13 Apr 25
£40.00 - £172.00
4.4

Ten In Ten - Day 3 2025

Egham, Englefield Green, Surrey
14 Apr 25
£24.00 - £34.00

PHOENIX - The Dauntless Potion Run

Sunbury on Thames, Middlesex
14 Apr 25
£22.00 - £39.95

Ten In Ten - Day 4 2025

Egham, Englefield Green, Surrey
15 Apr 25
£24.00 - £34.00

PHOENIX - The Resolute Potion Run

Sunbury on Thames, Middlesex
15 Apr 25
£22.00 - £39.95

Ten In Ten - Day 5 2025

Egham, Englefield Green, Surrey
16 Apr 25
£24.00 - £34.00

PHOENIX - The Perseverance Potion Run

Sunbury on Thames, Middlesex
16 Apr 25
£22.00 - £39.95

Ten In Ten - Day 6 2025

Egham, Englefield Green, Surrey
17 Apr 25
£24.00 - £34.00

PHOENIX - The Adversity Potion Run

Sunbury on Thames, Middlesex
17 Apr 25
£22.00 - £39.95

PHOENIX - The Intrepid Potion Run

Sunbury on Thames, Middlesex
18 Apr 25
£22.00 - £39.95

VICTORIA PARK 5K, 10K & HALF MARATHON

London
18 Apr 25
£28.00 - £152.00
4.7

Ten In Ten - Day 7 2025

Staines, Middlesex
18 Apr 25
£24.00 - £34.00

The Enigma Easter Series

Milton Keynes, Buckinghamshire
18 Apr 25 - 19 Apr 25
£36.99 - £44.99

PHOENIX - The Indomitable Potion Run

Sunbury on Thames, Middlesex
19 Apr 25
£22.00 - £39.95

Ten In Ten - Day 8 2025

Staines, Middlesex
19 Apr 25
£27.00 - £40.00

Ten In Ten - Day 9 2025

Staines, Middlesex
20 Apr 25
£27.00 - £40.00

PHOENIX - The Unbreakable Potion Run

Sunbury on Thames, Middlesex
20 Apr 25
£22.00 - £39.95

CRYSTAL PALACE 5K 10K, HALF MARATHON & JUNIORS

London
20 Apr 25
£7.00 - £122.00
4.6

Ten In Ten - Day 10 2025

Staines, Middlesex
21 Apr 25
£24.00 - £34.00

PHOENIX - The Invincible Potion Run

Sunbury on Thames, Middlesex
21 Apr 25
£22.00 - £39.95

ATW Stevenage Spring Half Marathon & 10k

Ridlins Athletics Track, Woodcock Rd, Shephall, Stevenage
21 Apr 25
£25.44 - £33.92

Magna Carta Spring

Wraysbury Skiff & Punting Club  Riverside  Egham  Surrey TW20 0AA
26 Apr 25
£37.32 - £58.53
4.0

Lee Valley VeloPark 1 mile, 5k, 10k, 10 Mile & Half Marathon - June

London, Greater London
26 Apr 25
Free - £122.00
4.6

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

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

Surrey Hills Half Marathon

Guildford, Surrey
27 Apr 25
£20.00

PHOENIX - NOT the London Marathon Run 2025

Sunbury on Thames, Middlesex
27 Apr 25
£39.95

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

MK Marathon Weekend

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

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

Bank Holiday Madness May 2025

Staines, Middlesex
05 May 25
£24.00 - £34.00
Showing 81-120 of 251 results
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