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Trail Half marathons in South East in May 2026

Find trail half marathons in South East in May 2026 - filter by date, location or category, display on a map or use the advanced search to find your perfect race.

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Come and join the day of running and aim to complete a midweek half marathon within the 7-hour time limit on a scenic course then receive a fantastic medal and goody bag at the finish!
  • Mon 4 May
  • £20-£27
Staines, Surrey, UK

Bank Holiday Madness May | Half Marathon

Come and join the day of running and aim to complete a midweek half marathon within the 7-hour time limit on a scenic course then receive a fantastic medal and goody bag at the finish!

  • Enter online
  • Flat
  • Age 17 & over
  • 13.1 miles trail running
The Magna Carta Half Marathon is 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 9 May
  • £43-£45
Egham, Surrey, UK

Magna Carta Summer | Half Marathon

The Magna Carta Half Marathon is 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.

  • Chip timing
  • Enter online
  • Flat
  • Age 17 & over
  • 13.1 miles trail running + 70 ft ascent
Come and join the Spring Lucky Dip Run! There is no set medal for this race; instead, you will get to choose your own from a selection of medals from past events!
  • Sun 10 May
  • £16-£35
Staines, Surrey, UK

The Spring Lucky Dip Run

Come and join the Spring Lucky Dip Run! There is no set medal for this race; instead, you will get to choose your own from a selection of medals from past events!

  • Beginner-friendly
  • Event village
  • All ages
  • Trail run
  • 5K run
  • 10K run
  • Half marathon
  • Marathon
  • + 3 more races
  • Fri 1 May
Egham, Surrey, UK

Midweek Chasing Numbers May | Half Marathon

  • 13.1 miles trail running
  • Sun 10 May
Reading, Berkshire, UK

Goring Gap Trails | Run - Half Marathon

  • 13.1 miles trail running + 102 m ascent
  • Sun 10 May
Polegate, East Sussex, UK

The Rathfinny Run 10.7K and Half Marathon | Half Marathon

  • 21.4 km trail running
  • Sat 23 May
Eastbourne, East Sussex, UK

Seven Sisters Half Marathon

  • 13.1 miles trail running + 2057 ft ascent

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