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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

BEWL WATER 10KM, HALF MARATHON & ULTRA 50KM

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

The Hampshire Hoppit - Marathon, Half Marathon, and 10k

Basingstoke, Hampshire
15 Jun 25
£31.00 - £59.00
5.0
🚀Boosted

Run Bournemouth

Bournemouth, Dorset
11 Oct 25 - 12 Oct 25
£15.00 - £44.75
4.5

Richmond Park Half Marathon

London
09 Nov 25
£42.00 - £182.00
4.4

RUN DORNEY 5K, 10K & HALF MARATHON

Windsor, Berkshire
09 Nov 25
£30.00 - £142.00
4.2

PHOENIX - Remembrance Day Marathon & Half Marathon

Sunbury on Thames, Middlesex
09 Nov 25
£39.95

The One by the Canal

Watford, Hertfordshire
09 Nov 25
£35.00
4.5

Battersea Park Half Marathon

London
15 Nov 25
£37.00 - £162.00
4.8

NEW FOREST CENTRAL TRAIL RUN

Brockenhurst, Hampshire
15 Nov 25
£30.00 - £40.00

The Hartfield Honey Run - 2025

Hartfield, East Sussex
16 Nov 25
£20.00 - £30.00
4.3

PHOENIX - Runbelievable - Road Runner - Day 1

Gravesend, Kent
19 Nov 25
£39.95

PHOENIX - Runbelievable - Road Runner - Day 2

Gravesend, Kent
20 Nov 25
£39.95

PHOENIX - Runbelievable - Road Runner - Day 3

Gravesend, Kent
21 Nov 25
£39.95

PHOENIX - Runbelievable - Road Runner - Day 4

Gravesend, Kent
22 Nov 25
£39.95

Smurf Run - Wales

Dare Valley Country Park, Aberdare, CF44 7PS
22 Nov 25
£27.00 - £35.00

WIMBLEDON 10K & HALF MARATHON

London
23 Nov 25
£32.00 - £162.00
4.5

PHOENIX - Runbelievable - Road Runner - Day 5

Gravesend, Kent
23 Nov 25
£39.95

WITTERING BEACH RUN

Chichester, West Wittering, West Sussex
29 Nov 25
£30.00 - £40.00

PHOENIX - Riverside Marathon & Half Marathon

Sunbury on Thames, Middlesex
29 Nov 25
£33.50
4.5

The One in the Park - Richmond - November

Richmond
30 Nov 25
£26.00 - £35.00
5.0

FINSBURY PARK 5K, 10K & HALF MARATHON

London
30 Nov 25
£30.00 - £142.00
4.3

PHOENIX - Christmas Advent Run

Sunbury on Thames, Middlesex
30 Nov 25
£22.00 - £39.95

Gremlins Christmas Half & Marathons

Milton Keynes, Buckinghamshire
05 Dec 25 - 06 Dec 25
£34.99 - £42.99

Sussex Downs Trail Run

Lewes, Plumpton, East Sussex
06 Dec 25
£30.00 - £40.00
4.3

Salisbury Plain Winter Edition

Old Fowler Barracks, Ludgershall road, Ludgershall, SP11 9RR. ​
06 Dec 25
£37.36 - £53.28
4.4

Running GP at Goodwood Motor Circuit – December

Chichester, West Sussex
07 Dec 25
£30.00 - £162.00
4.5

Deja Vu Marathon & Half Marathon

Milton Keynes, Buckinghamshire
07 Dec 25
£34.99 - £43.99

Richmond Park Half Marathon

London
07 Dec 25
£42.00 - £182.00
4.4

RUN DORNEY 5K, 10K & HALF MARATHON

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

VICTORIA PARK 5K, 10K & HALF MARATHON

London
13 Dec 25
£28.00 - £162.00
4.7

CRYSTAL PALACE 5K 10K, HALF MARATHON & JUNIORS

London
14 Dec 25
£7.00 - £122.00
4.6

Richmond Park December 5k,10k and Half Marathon

London, Greater London
14 Dec 25
£22.00 - £25.00
4.4

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

London, Greater London
20 Dec 25
Free - £122.00
4.6

Die Hard Christmas Jumpers Marathon & Half Marathon

Milton Keynes, Buckinghamshire
24 Dec 25
£34.99 - £42.99

PHOENIX - Year End Marathon & Half Marathon

Sunbury on Thames, Middlesex
28 Dec 25
£33.50
5.0

PHOENIX - Frozen Phoenix

Sunbury on Thames, Middlesex
29 Dec 25
£27.00 - £40.00

PHOENIX - Winter Runderland

Sunbury on Thames, Middlesex
30 Dec 25
£27.00 - £40.00
4.0

FA Cup Run

Milton Keynes, Buckinghamshire
03 Jan 26 - 04 Jan 26
£34.99 - £42.99

PHOENIX - Doughnut Dash

Sunbury on Thames, Middlesex
11 Jan 26
£39.95
5.0

The One in the Woods - Henley

Henley-on-Thames
08 Feb 26
£10.00 - £35.00
4.5

Hampton Court Half Marathon 2026

Thames Ditton, Surrey
15 Feb 26
£39.50
4.3

Dartford Half Marathon

Dartford, Kent
22 Feb 26
£7.00 - £142.00
4.5

Surrey Half Marathon

Woking, Surrey
22 Mar 26
£17.00 - £192.00
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