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.
- Wed 10 Sep
- £40
Run the River | 5K
Participate in the evening 5km run along the Thames, passing by London's iconic landmarks against a twilight backdrop.
- Chip timing
- Enter online
- Age 7 & over
- 5 km road running
- Sat 13 Sep
- £33-£38
Easier Said Than Run | 4 Hour
Run as far as you can during the 4-hour event through the lovely Bawsey Country Park on a multi-terrain loop. Run, rest, then head out for more.
- Chip timing
- Enter online
- Undulating
- Traffic free
- Age 18 & over
- 4 hrs trail running + 253 ft ascent
- Sun 14 Sep
- £16
The Amazing Northampton Run | 3 Mile Race
A great opportunity to be part of the day's events but over a shorter distance. Run the start and finish of the half marathon route with an exclusive link section through the beautiful Beckets Park.
- Chip timing
- Enter online
- Traffic free
- Age 5 & over
- 3.4 miles road running + 147 ft ascent
- 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 road 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
Tough Mudder London South | 5K - Saturday
Secure your charity place in Tough Mudder London South 5K Saturday today. Run for charity in a muddy obstacle course while supporting top UK charities. Find a cause and join their team today!
- 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 road running + 0 ft ascent
- Sun 21 Sep
Tough Mudder London South | 5K - Sunday
Secure your charity place in Tough Mudder London South 5K Sunday today. Run for charity in a muddy obstacle course while supporting top UK charities. Find a cause and join their team today!
- 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 road 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
- Entries close soon
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
- Wed 10 Sep
Hoad Hill Harriers Autumn 5K and 1 Mile Fun Run | 5K
- 5 km road running
- Thu 11 Sep
Clowbridge 5K Autumn Series – Race 2
- 5 km trail running + 25 m ascent
- Sun 14 Sep
The East Coast Chuffer | 5K
- 5 km trail running + 154 ft ascent