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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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London

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 Chasing Numbers July 2025

Egham, Surrey
04 Jul 25
£24.00 - £34.00

The Fix Addiction 5k, 10k and Half Marathon

Windsor, Buckinghamshire
05 Jul 25
£22.00 - £25.00
5.0

Jaws 50th Anniversary Marathons & Half Marathon

Milton Keynes, Buckinghamshire
05 Jul 25
£34.99 - £44.99

Chiltern Ridge Half Marathon

Aylesbury, Buckinghamshire
06 Jul 25
£32.00
4.3

Richmond Park Half Marathon

London
06 Jul 25
£40.00 - £172.00
4.4

Running GP at Goodwood Motor Circuit Races & Duathlons July

Chichester, West Sussex
06 Jul 25
£28.00 - £232.00

Live Aid 40th Anniversary Marathon Half Marathon & 50km

Milton Keynes, Buckinghamshire
12 Jul 25 - 13 Jul 25
£34.99 - £42.99

RUN DORNEY 5K, 10K & HALF MARATHON

Windsor, Berkshire
13 Jul 25
£30.00 - £162.00
4.2

Richmond Park July 5k,10k and Half Marathon

London, Greater London
20 Jul 25
£22.00 - £25.00
4.4

Run Whitstable & Herne Bay Summer 5k, 10k and half marathon

Herne Bay, Kent
20 Jul 25
£10.00 - £25.00

The One to the Castle - Windsor

Windsor, Berkshire
20 Jul 25 - 27 Jul 25
£35.00

RunThrough Wimbledon Common Half Marathon & 10k

London, Greater London
27 Jul 25
£32.00 - £162.00
4.9

Football League Original 12 Run

Milton Keynes, Buckinghamshire
02 Aug 25 - 03 Aug 25
£34.99 - £42.99

RUN DORNEY 5K, 10K & HALF MARATHON

Windsor, Berkshire
09 Aug 25
£30.00 - £162.00
4.2

Richmond Park Half Marathon

London
10 Aug 25
£40.00 - £172.00
4.4

PHOENIX - Prosecco Run

Dorking, Surrey
10 Aug 25
£22.00 - £39.95
5.0

Richmond Park August 5k, 10k and Half Marathon

London, Greater London
17 Aug 25
£22.00 - £25.00
4.4

LEE VALLEY VELOPARK 1 MILE, 5K, 10K, 10 MILE & HALF MARATHON

London, Greater London
23 Aug 25
Free - £122.00
4.6

PHOENIX - Summer Marathon & Half Marathon

Sunbury on Thames, Middlesex
30 Aug 25
£33.50

ATW Bedford Running Festival

Russell Park, The Embankment, Bedford MK40 3RH
06 Sep 25 - 07 Sep 25
£12.72 - £42.40

Andover Trail Marathon & Half

Kings road, Enham Alamien, Andover, SP11 6HP. Post code is for the car park. ​
06 Sep 25
£35.00 - £45.00
4.8

Richmond Park September 5k, 10k and Half Marathon

London, Greater London
07 Sep 25
£22.00 - £25.00
4.4

RunThrough Wimbledon Common Half Marathon & 10k

London, Greater London
07 Sep 25
£32.00 - £162.00
4.9

Run2Paris September 2025

London
10 Sep 25 - 14 Sep 25
£950.00

Bewl Water Autumn

Wadhurst
13 Sep 25
£37.36 - £66.01
4.5

Coronation Scot Marathons & Half Marathon

Milton Keynes, Buckinghamshire
13 Sep 25 - 14 Sep 25
£34.99 - £42.99

The River Run

Shoreham-by-Sea, West Sussex
14 Sep 25
£32.00 - £214.20

PHOENIX - Dragon's Eye Race 2

Cranleigh, Surrey
14 Sep 25
£27.00 - £40.00
5.0

Richmond Park Half Marathon

London
21 Sep 25
£38.00 - £172.00
4.4

Winchester Half Marathon

Winchester City Centre
21 Sep 25
£10.82 - £40.53
5.0

Ealing Half Marathon

London, Greater London
28 Sep 25
£45.00

The One on the Trail - Marlow

Marlow
28 Sep 25
£10.00 - £35.00

Folkestone Rotary Half Marathon

The Grand, The Leas, Folkestone, Kent,CT20 2XL
28 Sep 25
£4.56 - £27.48
4.0

ATW Welwyn Half Marathon & 10k

Gosling Sports Park, Stanborough Road, Welwyn Garden City, Hertfordshire, AL8 6XE
28 Sep 25
£30.74 - £39.22

Windsor Half Marathon 2025

Windsor, Windsor and Maidenhead
28 Sep 25
£44.00 - £48.00
4.7

RUN DORNEY 5K, 10K & HALF MARATHON

Windsor, Berkshire
04 Oct 25
£30.00 - £162.00
4.2

VICTORIA PARK 5K, 10K & HALF MARATHON

London
04 Oct 25
£28.00 - £152.00
4.7

Thames Meander Autumn

Petersham & Ham Sea Scouts HQ, Douglas House Meadow, Richmond, TW10 7AH
05 Oct 25
£37.36 - £58.59
4.5

Kingston Half Marathon 2025

Kingston upon Thames, Greater London
05 Oct 25
£39.50
5.0

RUN KENT HALF MARATHON, 10K & 5K

Tonbridge, Kent
05 Oct 25
£26.00 - £162.00
5.0
Showing 161-200 of 251 results
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