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Flat Trail runs in South East in Winter

Find flat trail runs in South East in Winter - filter by date, location or category, display on a map or use the advanced search to find your perfect race.

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Welcome to the 6-hour Boxing Day Challenge, where you can run the distance of your choice on an out-and-back route along the River Thames, with fuel stations, bespoke medal and goody bag.
  • Fri 26 Dec
  • £16-£35
Egham, Surrey, UK

Boxing Day Challenge

Welcome to the 6-hour Boxing Day Challenge, where you can run the distance of your choice on an out-and-back route along the River Thames, with fuel stations, bespoke medal and goody bag.

  • Families
  • Beginner-friendly
  • Event village
  • Age 12 & over
  • 5K run
  • 10K run
  • Half marathon
  • Marathon
  • Ultra run
  • + 1 more race
Come and join the day of running and aim to complete a 3K at your own pace on a scenic course then receive a fantastic pick and mix medal and goody bag at the finish!
  • Sat 27 Dec
  • £16-£18
Staines, Surrey, UK

Year End Time Turner | 3K

Come and join the day of running and aim to complete a 3K at your own pace on a scenic course then receive a fantastic pick and mix medal and goody bag at the finish!

  • Enter online
  • Flat
  • All ages
  • 3 km trail running
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 (quite flat) then receive a Rhino medal and goody bag at the finish!
  • Sat 3 Jan 2026
  • £16-£18
Egham, Surrey, UK

Rhino Run | 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 (quite flat) then receive a Rhino medal and goody bag at the finish!

  • Enter online
  • Flat
  • PB
  • Traffic free
  • Age 12 & over
  • 5 km trail running
Come and join The Racoon Rocket Run and earn yourself a beautiful medal with an adorable picture of a fluffy raccoon on it! What more could you ask for?
  • Sat 14 Feb 2026
  • £16-£35
Staines, Surrey, UK

The Racoon Rocket Run

Come and join The Racoon Rocket Run and earn yourself a beautiful medal with an adorable picture of a fluffy raccoon on it! What more could you ask for?

  • Families
  • Beginner-friendly
  • Event village
  • All ages
  • Trail run
  • 5K run
  • 10K run
  • Half marathon
  • Marathon
  • + 3 more races
For this run, not only will you earn a super cute rubber duck themed medal, but also your very own rubber ducky to take home with you!
  • Sat 21 Feb 2026
  • £16-£35
Staines, Surrey, UK

The Rubber Ducky Dash

For this run, not only will you earn a super cute rubber duck themed medal, but also your very own rubber ducky to take home with you!

  • Families
  • Beginner-friendly
  • Event village
  • All ages
  • Trail run
  • 5K run
  • 10K run
  • Half marathon
  • Marathon
  • + 3 more races
The Magna Carta events are based in scenic Runnymede right near the historic site where the treaty of Magna Carta was agreed by King John of England and signed on 15th June 1215.
  • Sat 21 Feb 2026
  • £33-£55
Egham, Surrey, UK

Magna Carta Winter

The Magna Carta events are based in scenic Runnymede right near the historic site where the treaty of Magna Carta was agreed by King John of England and signed on 15th June 1215.

  • Beginner-friendly
  • Event village
  • Age 17-80
  • 10K run
  • Half marathon
  • Marathon
  • Sun 28 Dec
Walton-on-Thames, Surrey, UK

Year End Marathon & Half Marathon

  • Half marathon
  • Marathon
  • Sun 28 Dec
Southampton, Hampshire, UK

Winter X

  • Ultra run
  • 10K run
  • Trail run 2
  • 50K ultra run
  • Wed 25 Feb 2026
Godalming, Surrey, UK

Thursley Common 10K

  • 10 km trail running

Other UK events

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