42

Trail Half marathons in UK in May 2026

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

Filter by place

Filter by date

Filter by category

Map

Event listings

Select an event for photos, video, route, location, reviews, entry fees and how to enter.

  • Sat 9 May
  • £26-£28
Preston, Lancashire, UK

Cottam Canter | Half Marathon

  • 13.1 miles trail running
  • Sun 10 May
  • £30
Corby, Northamptonshire, UK

Run Rabbit Trail Festival | Thump Trail Half

  • 13.1 miles trail running
  • Sun 10 May
  • £20-£22
Letchworth Garden City, Hertfordshire, UK

The Greenway Challenge

  • 13 miles trail running
  • Sun 10 May
  • £23-£25
Macclesfield, Cheshire, UK

Happy Valley Trails Event | Half Marathon

  • 13.1 miles trail running + 770 m ascent
  • Sun 10 May
  • £36-£38
Thirsk, North Yorkshire, UK

Hardmoors 26.2 White Horse Trail Marathon | Half Marathon

  • 16.5 miles trail running + 1900 ft ascent
  • Sun 10 May
  • £26-£28
Preston, Lancashire, UK

Avenham Amble | Half Marathon

  • 13.1 miles trail running
  • Sun 10 May
  • £25-£27
Dorchester, Dorset, UK

Hardy Half Marathon | Original Hardy Half - 13.1 Miles

  • 13.1 miles trail running + 1332 ft ascent
  • Sun 10 May
  • £40-£42
Reading, Berkshire, UK

Goring Gap Trails | Run - Half Marathon

  • 13.1 miles trail running + 102 m ascent
  • Sun 10 May
  • £40-£42
Polegate, East Sussex, UK

The Rathfinny Run 10.7K and Half Marathon | Half Marathon

  • 21.4 km trail running
  • Sat 16 May
  • £25-£35
Rugeley, Staffordshire, UK

Merrell Cannock Chase Challenge | Half Marathon Trail Run

  • 13.1 miles trail running
  • Sat 16 May
  • £30-£32
Matlock, Derbyshire, UK

White Peak Half Marathon

  • 13.1 miles trail running + 800 ft ascent
  • Sat 16 May
  • £48-£50
Plymouth, Devon, UK

Race The Tide | Long Half-Marathon

  • 15 miles trail running
  • Sat 23 May
  • £42-£44
Eastbourne, East Sussex, UK

Seven Sisters Half Marathon

  • 13.1 miles trail running + 2057 ft ascent
  • Sat 30 May
  • £47-£49
Ballycastle, County Antrim, UK

Norn Iron 100 Half Marathon

  • 13.1 miles trail running
  • Sat 30 May
  • £44
Saint Agnes, Cornwall, UK

Trail Pursuit: Cornwall | Half Marathon

  • 13.1 miles trail running

Search options

Back to search options
4 steps to wellbeing
Sleep well

A good night's sleep is an essential foundation for a healthy lifestyle, effective training and weight control.

Train slow

Low-intensity training is easier for you, reduces the risk of injury and helps builds an efficient aerobic system.

Eat natural

Cut out sugar & junk food, reduce carbs, eat natural foods and train your body to burn fat for fuel.

Get outdoors

Fresh air, natural light and reconnecting with nature all help to improve mental and physical wellbeing.