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Half Marathons Found in the South East

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Half Marathons In the South East 2026 - 2027

The most comprehensive list of Half Marathons in the South East in 2026 - 2027 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

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Best Race Series x Adidas 2026 - The Endurance Test - Half Marathon

Battersea Park, London
Sun 12 Apr 26
£28.00

Midweek Medal Madness Run August 2026

Wraysbury Skiff and Punting Club, Riverside, Egham TW20 0AA
Fri 14 Aug 26
£18.00 - £27.00

Street Child - Craft Half & 10K

Richmond, Surrey
Sat 15 Aug 26
£25.00 - £40.00

I'm Not Throwing Away My Shot Run

The Last Hop, Unit 2, Thames Edge, 15-18 Clarence St, Staines TW18 4SU
Sat 15 Aug 26
£18.00 - £35.00

Lee Valley Velo Park - August

London, Greater London
Sat 15 Aug 26
£12.00 - £34.00
4.7

SOUTHAMPTON RUNNING FESTIVAL

Southampton, Hampshire
Sun 16 Aug 26
£12.00 - £36.00
4.7

Isle of Wight Half Marathon

Ryde Rowing Club, Isle of Wight, PO33 1ND
Sun 16 Aug 26
£24.62

Run Dorney Lake Evening Runs 10k & 5k August

Windsor, Berkshire
Wed 26 Aug 26
£30.00 - £142.00
5.0

ATW Bedford Running Festival

Russell Park, The Embankment, Bedford MK40 3RH
Sat 05 Sep 26 - Sun 06 Sep 26
£12.72 - £41.34

Henley River 10k, Half Marathon & Junior Race September 2026

Henley-on-Thames, Oxfordshire
Sat 05 Sep 26
£7.00 - £142.00
4.6

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
£34.17
4.4

Richmond Park September 5k, 10k and Half Marathon

London, Greater London
Sun 06 Sep 26
£25.00 - £30.00
4.5

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

Herne Bay, Kent
Sun 06 Sep 26
£25.00 - £30.00
5.0

WIMBLEDON 10K & HALF MARATHON

London
Sun 06 Sep 26
£34.00 - £38.00
4.5

Midweek Chasing Numbers Sept 2026

Wraysbury Skiff and Punting Club, Riverside, Egham TW20 0AA
Fri 11 Sep 26
£18.00 - £27.00
5.0

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

Basildon Half Marathon

Basildon, Essex
Sun 13 Sep 26
£12.00 - £38.00
5.0

Something To Talk About

Avon Tyrrell Outdoor Activity Centre, Bransgore, Christchurch BH23 8EE
Sun 20 Sep 26
£42.13

Run Reigate Half Marathon, 10k, 5k & Kids Race

Reigate, Surrey
Sun 20 Sep 26
£19.00 - £42.00
4.0

Run Dorney Lake Marathon, Half Marathon, 10k & 5k - September

Windsor, Berkshire
Sat 26 Sep 26
£30.00 - £162.00
4.3

Battersea Park 10k & Half Marathon

London
Sat 26 Sep 26
£42.00

Swindon Half Marathon

Swindon
Sun 27 Sep 26
£46.00

Ealing Half Marathon 2026

London
Sun 27 Sep 26
£45.37 - £47.37

Folkestone Rotary Half Marathon

The Grand, The Leas, Folkestone, Kent,CT20 2XL
Sun 27 Sep 26
£5.58 - £33.78

Run Dorney Lake Half Marathon, 10k & 5k - October

Windsor, Berkshire
Sat 03 Oct 26
£30.00 - £162.00
4.3

Kingston Half Marathon 2026

Kingston upon Thames, Surrey
Sun 04 Oct 26
£44.50
5.0

RUN KENT HALF MARATHON, 10K & 5K

Tonbridge, Kent
Sun 04 Oct 26
£32.00 - £40.00
4.8

ATW Welwyn Half Marathon & 10k

Gosling Sports Park, Stanborough Road, Welwyn Garden City, Hertfordshire, AL8 6XE
Sun 04 Oct 26
£30.74 - £39.22
5.0

Hampton Court Palace Half Marathon Presented by Nuun

East Molesey, Greater London
Sun 11 Oct 26
£47.00 - £212.00
4.2

Running GP at Goodwood Motor Circuit October

Chichester, West Sussex
Sun 11 Oct 26
£30.00 - £44.00
4.5

Chelmsford Marathon & Half Marathon

Central Park, Chelmsford, Essex, CM2 0FQ.
Sun 11 Oct 26
£40.08 - £72.60

Lee Valley Velo Park - October

London, Greater London
Sat 17 Oct 26 - Sat 24 Oct 26
£12.00 - £34.00
4.7

Top Gun 40th Anniversary Marathons & Half Marathons

Milton Keynes, Buckinghamshire
Sat 17 Oct 26 - Sun 18 Oct 26
£37.99 - £43.99

Henley Half Marathon

Henley-on-Thames, Oxfordshire
Sun 18 Oct 26
£10.00 - £40.00
4.9

BATTERSEA PARK RUNNING FESTIVAL

London
Sat 24 Oct 26
£12.00 - £47.00
4.5

Andover Half Marathon & 12km

14-4 High St, Andover SP10 1LJ
Sun 25 Oct 26
£20.91 - £36.60

Windsor Dorney Lakeside Half Marathon

Dorney Lake, Off Court Lane, Windsor, Berks, SL4 6QP
Sun 25 Oct 26
£36.21

Wight Lines

Hordle Cliff West, Cliff Rd, Milford on Sea, SO41 0NT
Sun 25 Oct 26
£42.13

Richmond Half Marathon Autumn

Old Deer Park - Richmond Upon Thames TW9 2SF
Sun 01 Nov 26
£41.51
Showing 201-240 of 275 results
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