Half marathons in South East in September 2025

Find half marathons near me in South East in September 2025 - filter by date or location, display on a map or use the advanced search to find your perfect race.

Filter by month

Filter by place

Map

Event listings

Select an event for photos, video, route, location, reviews, entry fees and how to enter.

Welcome to a 7-hour timed running event where you can run a half marathon at your own pace on an out-and-back route, with fuel stations each lap, and a medal and goody bag at the finish.

Sun 21 Sep
£23-£35

Staines, Surrey, UK

Fraggle Run | Half Marathon

Welcome to a 7-hour timed running event where you can run a half marathon at your own pace on an out-and-back route, with fuel stations each lap, and a medal and goody bag at the finish.

Enter online
Flat
Traffic free
Age 17 & over

13.1 miles trail running + 0 ft ascent

Sat 27 Sep
£23-£35

Staines, Surrey, UK

Romp Run | Half Marathon

Welcome to a 7-hour timed running event where you can run a half marathon at your own pace on an out-and-back route, with fuel stations each lap, and a medal and goody bag at the finish.

Enter online
Flat
Traffic free
Age 17 & over

13.1 miles trail running + 0 ft ascent

This ever popular race promises amazing coastal views and a relatively flat coastal promenade run with real PB potential.

Sun 28 Sep
£24-£26

Folkestone, Kent, UK

Folkestone Rotary Half Marathon

This ever popular race promises amazing coastal views and a relatively flat coastal promenade run with real PB potential.

Chip timing
Enter online
Flat
PB
Age 17 & over

13.1 miles road running + 469 ft ascent

Entries close soon

An inspiring half marathon in Windsor Great Park, starting and finishing on the Long Walk with Windsor Castle as the backdrop - probably the most iconic of all road race finishes in the UK!

Sun 28 Sep
£42-£44

Windsor, Berkshire, UK

Windsor Half Marathon

An inspiring half marathon in Windsor Great Park, starting and finishing on the Long Walk with Windsor Castle as the backdrop - probably the most iconic of all road race finishes in the UK!

Chip timing
Enter online
Undulating
Traffic free
Age 17 & over

13.1 miles road running

Get active in the award-winning grounds and surrounding Kent countryside in a half marathon! Recruit your friends and celebrate completing your challenge in the festival village.

Sun 28 Sep
£45

Edenbridge, Kent, UK

Hever Castle | Half Marathon

Get active in the award-winning grounds and surrounding Kent countryside in a half marathon! Recruit your friends and celebrate completing your challenge in the festival village.

Chip timing
Enter online
Age 17 & over

21.1 km trail running

Sat 20 Sep

Winchester, Hampshire, UK

Guided Half Marathon - Winchester

13.1 miles trail running

Sun 21 Sep

Tunbridge Wells, Kent, UK

Hospice Run | Half Marathon

13.1 miles road running + 1174 ft ascent

Sun 21 Sep

Winchester, Hampshire, UK

Winchester Half Marathon | Half Marathon

13.1 miles road running + 841 ft ascent

Sun 21 Sep

Reigate, Surrey, UK

Run Reigate | Half Marathon

13.1 miles road running + 174 m ascent

Sat 27 Sep

Lewes, East Sussex, UK

Dark Down Half Marathon

13.1 miles trail running + 1654 ft ascent

Sun 28 Sep

Marlow, Berkshire, UK

The One on the Trail | Marlow | Half Marathon

13.1 miles multi terrain running

Sun 28 Sep

Horsham, West Sussex, UK

Run Barns Green | Half Marathon

13.1 miles road running

Sun 28 Sep

Horsham, West Sussex, UK

Run Barns Green | Kids Colour Run

750 m multi terrain running

Other UK events

Search options

Back to search options