5K runs in UK in September 2025
Find 5k runs near me in UK in September 2025 - filter by date or location, display on a map or use the advanced search to find your perfect race.
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Event listings
Select an event for photos, video, route, location, reviews, entry fees and how to enter.
- Thu 18 Sep
- £25-£30
The City v Wharf Corporate Run Challenge | 5K
The challenge is back on! Who will reign supreme - City or Wharf? It's time to get competitive and bring the victory to your team.
- Chip timing
- Enter online
- Flat
- Age 11 & over
- 5 km road running + 9 m ascent
- Sat 20 Sep
- £14-£16
Sir Titus Autumn Fudge Trudge | Day 1 | 5K
Enjoy a trip up the Leeds and Liverpool Canal this autumn with a choice of distances, all along the flat and even towpath, this event is perfect for runners of all abilities.
- Chip timing
- Enter online
- Flat
- Age 16 & over
- 5 km trail running + 82 ft ascent
- Sat 20 Sep
- £22-£27
Fraggle Run | Wales | 5K
Come and join the day of running and aim to complete a 5K at your own pace on a scenic course then receive a fantastic themed medal and goody bag at the finish!
- Enter online
- Traffic free
- Age 12 & over
- 5 km trail running
- Sat 20 Sep
- £23-£25
The Lucky Horseshoe | 5K
Your race, your pace, your distance! Utilising the Gallops route at the amazing Suffolk Running Centre which takes you through to Newmarket so you may get to see the race horses in training!
- Chip timing
- Enter online
- Undulating
- Traffic free
- Age 18 & over
- 5 km trail running
- Sat 20 Sep
- £100
Tough Mudder London South | 5K - Saturday
London South is the standout event of the series for good reason. 'Showstopper' obstacles, a diverse course, seriously muddy obstacles and a party atmosphere make it the ultimate mud party!
- Enter online
- Hilly
- Traffic free
- Fundraising optional
- Age 14 & over
- 5 km multi terrain running
- Sat 20 Sep
- £10-£65
Birminghams Rainbow Rush | 5K
Join Birmingham Hospice to take over Cofton Park for a day filled with a kaleidoscope of colour, music and laughter over a fun 5km route!
- Enter online
- Undulating
- Traffic free
- Age 5 & over
- 5 km multi terrain running
- Sun 21 Sep
- £14-£16
Sir Titus Autumn Fudge Trudge | Day 2 | 5K
Enjoy a trip up the Leeds and Liverpool Canal this autumn with a choice of distances, all along the flat and even towpath, this event is perfect for runners of all abilities.
- Chip timing
- Enter online
- Flat
- Age 16 & over
- 5 km trail running + 82 ft ascent
- Sun 21 Sep
- £23-£27
Fraggle Run | 5K
Come and join the day of running and aim to complete a 5K at your own pace on a scenic course then receive a fantastic themed medal and goody bag at the finish!
- Enter online
- Flat
- Traffic free
- Age 12 & over
- 5 km trail running + 0 ft ascent
- Sun 21 Sep
- £100
Tough Mudder London South | 5K - Sunday
London South is the standout event of the series for good reason. 'Showstopper' obstacles, a diverse course, seriously muddy obstacles and a party atmosphere make it the ultimate mud party!
- Enter online
- Hilly
- Traffic free
- Fundraising optional
- Age 14 & over
- 5 km multi terrain running
- Sat 27 Sep
- £26-£28
Runaway Challenge | 5K
Come and join the day of running and aim to complete a 5K at your own pace on an out-and-back route along an old railway line (nice and flat) then receive a medal and goody bag at the finish!
- Enter online
- Flat
- PB
- Traffic free
- Age 12 & over
- 5 km trail running + 30 ft ascent
- Sat 27 Sep
- £23-£27
Romp Run | 5K
Come and join the day of running and aim to complete a 5K at your own pace on a scenic out-and-back course then receive a fantastic themed medal and goody bag at the finish!
- Enter online
- Flat
- Traffic free
- Age 12 & over
- 5 km trail running + 0 ft ascent
- Sun 28 Sep
- £25-£27
The Wensum Way Trail | 5K
Enjoy the stunning route, push your limits, and, of course, earn your race bling over 5K distance. Runners will love the fuel and encouragement with every lap!
- Enter online
- Age 18 & over
- 5 km trail running + 62 ft ascent
- Sun 28 Sep
- £12.50-£16.50
River Ness 5K
This welcoming 5K for runners of all abilities follows a flat route by the scenic River Ness, as part of the awe-inspiring Loch Ness Marathon festival weekend.
- Flat
- Traffic free
- Age 1 & over
- 5 km road running
- Thu 18 Sep
Clowbridge 5K Autumn Series – Race 3
- 5 km trail running + 25 m ascent
- Fri 19 Sep
Lancaster & Morecambe AC - Power of 5K Race Series - Race 6
- 5 km road running
- Sun 21 Sep
Run For Nature | Chester Zoo 5K, 10K and Kids Mile | 5K
- 5 km road running
- Sun 21 Sep
Honiton Hippo, Hungry Hippo & Hippo Calf | Hungry Hippo 5K
- 5 km multi terrain running