Half marathons in September 2025

Find half marathons 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.

Entries close soon

Sun 28 Sep
Entries close soon

London, UK

Ealing Half Marathon

Get the #EalingFeeling at the triple Gold award winning UK No1 Half Marathon.

Recycling
Newcomers
Chip timing
Enter online
Traffic free
Event village
Park
Sustainability policy
Age 17 & over

13.1 miles road running + 250 ft ascent

One of the longest-established and most popular city centre road events in the UK! A true Nottingham favourite, it’s also the city’s biggest charity fundraising event!

Sun 28 Sep

Nottingham, Nottinghamshire, UK

Robin Hood Half Marathon

Secure your charity place in the Robin Hood Half Marathon today. Run for charity in the city's biggest fundraising event while supporting top UK charities. Find a cause and join their team today!

Chip timing
Enter online
Undulating
Traffic free
Age 17 & over

13.1 miles road running

The popular Welwyn Half Marathon starts and finishes on the impressive 400m athletics track at Gosling Sports Park with an ideal, traffic-free, disused railway line in between.

Sun 28 Sep
£35-£37

Welwyn Garden City, Hertfordshire, UK

ATW Welwyn Half Marathon

The popular Welwyn Half Marathon starts and finishes on the impressive 400m athletics track at Gosling Sports Park with an ideal, traffic-free, disused railway line in between.

Chip timing
Enter online
Traffic free
Age 17 & over

13.1 miles road running + 400 ft ascent

Looking for a PB? This is your course. Pancake-flat & mostly traffic-free, come to explore the Tarka Trail then receive a fabulous medal.

Sun 28 Sep
£30-£32

Barnstaple, Devon, UK

RUN Barnstaple | Half Marathon

Looking for a PB? This is your course. Pancake-flat & mostly traffic-free, come to explore the Tarka Trail then receive a fabulous medal.

Enter online
Flat
Age 17 & over

13.1 miles road running

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

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

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.