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5K runs in May 2026

Find 5k runs in May 2026 - filter by date or location, display on a map or use the advanced search to find your perfect race.

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Shoot for the stars on the rapid Rocket Run! Join this fast rocket-fueled 5K with an 'out of this world' bling on a fast and flat point-to-point course from central Milton Keynes to Stadium MK.
  • Sun 3 May 2026
  • £18-£28
  • Sun 3 May 2026
  • £18-£28
Milton Keynes, Buckinghamshire, UK

MK Marathon Weekend | Rocket 5K

Shoot for the stars on the rapid Rocket Run! Join this fast rocket-fueled 5K with an 'out of this world' bling on a fast and flat point-to-point course from central Milton Keynes to Stadium MK.

  • Chip timing
  • Enter online
  • Flat
  • Undulating
  • PB
  • Traffic free
  • Age 12 & over
  • 5 km road running + 89 ft ascent
Be one of 15,000 Mudders to prove you're tough enough to conquer the most technically difficult obstacle course of the series. Expect hills, forest trails, muddy ditches, hills and a finisher beer.
  • Sat 9 May 2026
  • Sat 9 May 2026
Henley-on-Thames, Buckinghamshire, UK

Tough Mudder London West | 5K - Saturday

Secure your charity place in Tough Mudder London West 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
  • Age 14 & over
  • 5 km multi terrain running
Be one of 15,000 Mudders to prove you're tough enough to conquer the most technically difficult obstacle course of the series. Expect hills, forest trails, muddy ditches, hills and a finisher beer.
  • Sun 10 May 2026
  • Sun 10 May 2026
Henley-on-Thames, Buckinghamshire, UK

Tough Mudder London West | 5K - Sunday

Secure your charity place in Tough Mudder London West 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
Graded ‘easy’ this scenic 5K trail run is for ages 12-17 and can be fast and furious or run for fun - it’s your enjoyment that counts. Includes Full Weekend Festival Ticket in the price!
  • Sat 16 May 2026
  • £30
  • Sat 16 May 2026
  • £30
Keswick, Cumbria, UK

Keswick Mountain Festival | adidas TERREX Junior 5K Trail Run

Graded ‘easy’ this scenic 5K trail run is for ages 12-17 and can be fast and furious or run for fun - it’s your enjoyment that counts. Includes Full Weekend Festival Ticket in the price!

  • Chip timing
  • Undulating
  • Traffic free
  • Age 12-17
  • 5 km trail running
Graded ‘easy’ this scenic 5K trail run is for everyone and can be fast and furious from the word go or taken easy - it’s your enjoyment that counts. Includes Full Weekend Festival Ticket in the price!
  • Sat 16 May 2026
  • £30-£47.50
  • Sat 16 May 2026
  • £30-£47.50
Keswick, Cumbria, UK

Keswick Mountain Festival | adidas TERREX 5K Trail Run

Graded ‘easy’ this scenic 5K trail run is for everyone and can be fast and furious from the word go or taken easy - it’s your enjoyment that counts. Includes Full Weekend Festival Ticket in the price!

  • Families
  • Newcomers
  • Music
  • Chip timing
  • Undulating
  • Traffic free
  • Event village
  • Age 10 & over
  • 5 km trail running
Can you survive Farmmageddon? A fantastic 5.3K loop through the lovely grounds of Hyde Hall Farm as part of the Farmmageddon endurance weekend.
  • Sat 23 May 2026
  • £33-£38
  • Sat 23 May 2026
  • £33-£38
Buntingford, Hertfordshire, UK

Farmmageddon | 5K

Can you survive Farmmageddon? A fantastic 5.3K loop through the lovely grounds of Hyde Hall Farm as part of the Farmmageddon endurance weekend.

  • Chip timing
  • Enter online
  • Undulating
  • Traffic free
  • Age 18 & over
  • 5 km trail running + 164 ft ascent
The 5K is one of the first events of the exciting running festival weekend and offers a picturesque route around Holyrood Park with stunning panoramic views of the city and Edinburgh Castle.
  • Sat 23 May 2026
  • £32
  • 7 charities
  • Sat 23 May 2026
  • £32
  • 7 charities
Edinburgh, UK

Edinburgh 5K

The 5K is one of the first events of the exciting running festival weekend and offers a picturesque route around Holyrood Park with stunning panoramic views of the city and Edinburgh Castle.

  • Chip timing
  • Enter online
  • Undulating
  • Traffic free
  • Age 11 & over
  • 5 km road running + 116 m ascent
A challenging 5K ‘fun’ run as part of the Lake District Running Festival an iconic location with a grandstand finish, wooden medal, free event photos and, more importantly, cake...
  • Sat 30 May 2026
  • £15-£20
  • Sat 30 May 2026
  • £15-£20
Ambleside, Cumbria, UK

Lake District Running Festival | Grasmere Gallop 5km Trail Run

A challenging 5K ‘fun’ run as part of the Lake District Running Festival an iconic location with a grandstand finish, wooden medal, free event photos and, more importantly, cake...

  • Undulating
  • Age 6 & over
  • 5.7 km trail running + 61 m ascent
  • Sat 2 May 2026
Eau Claire, Wisconsin, USA

Eau Claire Marathon | ECM 5K

  • 5 km road running
  • Sun 3 May 2026
Southampton, Hampshire, UK

ABP Southampton Marathon | 5K

  • 5 km road running + 23 m ascent
  • Sat 16 May 2026
London, UK

Hackney Moves | Hackney 5K

  • 5 km road running

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