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Half marathons in South East in December 2025

Find half marathons in South East in December 2025 - filter by date, location or category, display on a map or use the advanced search to find your perfect race.

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A new and unique concept where you turn up ready to conquer a Half Marathon but if you're feeling great tackle a Marathon, or go easy and run a cool 10km depending on how you feel on the day!
  • Sun 14 Dec
  • £26-£37.50
Gerrards Cross, Buckinghamshire, UK

Running Tribe Races | Dec | Half Marathon

A new and unique concept where you turn up ready to conquer a Half Marathon but if you're feeling great tackle a Marathon, or go easy and run a cool 10km depending on how you feel on the day!

  • Enter online
  • Hilly
  • Age 16 & over
  • 13.1 miles multi terrain running
Come and join the morning of running and aim to complete a half marathon at your own pace on a scenic course with Christmas Dinner on route, present, themed medal and goody bag at the finish!
  • Thu 25 Dec
  • £23-£35
Egham, Surrey, UK

Christmas Day Cracker Run | Half Marathon

Come and join the morning of running and aim to complete a half marathon at your own pace on a scenic course with Christmas Dinner on route, present, themed medal and goody bag at the finish!

  • Enter online
  • Traffic free
  • Age 17 & over
  • 13.1 miles trail running
Come and join the day of running and aim to complete a half marathon at your own pace on a flat, out-and-back route along the River Thames then receive a bespoke medal and goody bag at the finish!
  • Fri 26 Dec
  • £33-£35
Egham, Surrey, UK

Boxing Day Challenge | Half Marathon

Come and join the day of running and aim to complete a half marathon at your own pace on a flat, out-and-back route along the River Thames then receive a bespoke medal and goody bag at the finish!

  • Enter online
  • Flat
  • Traffic free
  • Age 17 & over
  • 13.1 miles trail running
Come and join the day of running and aim to complete a half marathon 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
  • £23-£35
Staines, Surrey, UK

Year End Time Turner | Half Marathon

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

  • Enter online
  • Age 17 & over
  • 13.1 miles trail running
Come and join the day of running and aim to complete a half marathon at your own pace on an out-and-back route along the River Thames, then receive a medal and goody bag at the finish!
  • Wed 31 Dec
  • £33-£35
Egham, Surrey, UK

River Thames Run | Half Marathon

Come and join the day of running and aim to complete a half marathon at your own pace on an out-and-back route along the River Thames, then receive a medal and goody bag at the finish!

  • Enter online
  • Traffic free
  • Age 17 & over
  • 13.1 miles trail running
  • Sun 21 Dec
Southsea, Hampshire, UK

Portsmouth Coastal Waterside Marathon Events | Festive Half Marathon

  • 13.1 miles multi terrain running
  • Sun 28 Dec
Walton-on-Thames, Surrey, UK

Year End Marathon & Half Marathon | Half Marathon

  • 13.1 miles trail running

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