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Trail runs in UK in May 2026

Find trail runs 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.

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

Come and join in at Slaithwaite (Slawit) for this brilliant pop-up Summer Series. Jumble medal, beer or soft drink and sweetie bag for all runners.
  • Thu 28 May
  • £10-£17
Slaithwaite, West Yorkshire, UK

Slawit - Rock up n' Run

Come and join in at Slaithwaite (Slawit) for this brilliant pop-up Summer Series. Jumble medal, beer or soft drink and sweetie bag for all runners.

  • 5K run
  • 10K run
  • Beginner-friendly
  • Event village
  • Age 16 & over
A weekend of inclusive trail races, camping, festival vibes, yoga workshops, guided runs, live music and outdoor cinema, all based in the grounds of the iconic Blair Castle in the Cairngorms.
  • Fri 29 - Sun 31 May
  • £10-£79
Pitlochry, Perth and Kinross, UK

Blair Castle Trail Weekender

A weekend of inclusive trail races, camping, festival vibes, yoga workshops, guided runs, live music and outdoor cinema, all based in the grounds of the iconic Blair Castle in the Cairngorms.

  • Ultra run
  • Trail run 4
  • Walking festival
  • Half marathon
  • Families
  • Recycling
  • Beginner-friendly
  • Plastic bottle free
  • Entertainment
  • Music
  • Event village
  • Event expo
  • Park
  • Rural
  • Mountains
  • Sustainability policy
  • Public transport links
  • All ages
50 years of Lake District running in one unforgettable weekend! Trail runners, fell runners, orienteers and walkers of all abilities in an iconic location with family-friendly activities and more.
  • Sat 30 - Sun 31 May
  • FREE-£85
Ambleside, Cumbria, UK

Lake District Running Festival

50 years of Lake District running in one unforgettable weekend! Trail runners, fell runners, orienteers and walkers of all abilities in an iconic location with family-friendly activities and more.

  • Sprint orienteer
  • 5K run
  • 10K run
  • Trail run
  • Marathon
  • + 2 more races
  • Families
  • Beginner-friendly
  • Event village
  • Rural
  • Mountains
  • Age 5 & over
  • Fri 1 May
  • £16-£27
Egham, Surrey, UK

Midweek Chasing Numbers May

  • Trail run
  • 5K run
  • 10K run
  • Half marathon
  • Marathon
  • + 3 more races
  • Sat 2 May
  • £69.90-£79.90
Bristol, Somerset, UK

Bristol Backyard Ultra

  • 1 day trail running
  • Sat 2 May
  • £10-£39
Kendal, Cumbria, UK

Lakeland Trails in Staveley

  • 5K run
  • 10K run
  • Half marathon 2
  • Sat 2 May
  • £50-£99
Brecon, Powys, UK

Rasus y Bannau

  • Marathon
  • Ultra run
  • 100K ultra run
  • Sat 2 May
  • £45
Guildford, Surrey, UK

Greensand Way Ultra Run

  • 30 miles trail running
  • Sun 3 May
  • £18-£32
Wimborne, Dorset, UK

The Bluebell Bash

  • 5K run
  • 10K run
  • Half marathon
  • Sun 3 May
  • £28-£77
Shipston-on-Stour, Warwickshire, UK

Tempo Trail Races

  • 10K run
  • Half marathon
  • Marathon
  • Ultra run 2
  • Sun 3 May
  • £20
Lancing, West Sussex, UK

Three Forts Challenge | 5 Mile Trail Run

  • 5 miles trail running + 553 ft ascent
  • Sun 3 May
  • £25
Epsom, Surrey, UK

Leatherhead Rotary Bluebell 10K

  • 10 km trail running
  • Sun 3 May
  • £13-£39
Camberley, Surrey, UK

Run Frimley | 1 Mile Fun Run

  • 1 km trail running
  • Mon 4 May
  • £38-£56
Winchester, Hampshire, UK

BigWayRound - Winchester

  • Trail run 2
  • Marathon
  • 50K ultra run
  • Wed 6 May
  • £21
Carlisle, Cumbria, UK

Carlisle City Urban Trail Run

  • 10 km trail running
  • Fri 8 May
  • £22-£38
Preston, Lancashire, UK

Brockholes Bimble

  • 10K run
  • Half marathon
  • Marathon
  • Ultra run
  • Fri 8 May
  • £33.30-£39
Loughborough, Leicestershire, UK

Bat Challenge

  • 6 hrs trail running
  • Sat 9 May
  • £35-£71
Exmoor, Devon, UK

Endurancelife | Exmoor

  • 10K run
  • Half marathon
  • Marathon
  • Ultra run
  • Sat 9 May
  • £18-£38
Preston, Lancashire, UK

Cottam Canter

  • 5K run
  • 10K run
  • Half marathon
  • Marathon
  • Ultra run
  • Sat 9 May
  • £27.50-£38.50
Sidmouth, Devon, UK

Sid Valley Ring Half and Third Marathon

  • Half marathon
  • Trail run
  • Sat 9 - Sun 10 May
  • £20-£75
Corby, Northamptonshire, UK

Run Rabbit Trail Festival

  • Trail run
  • 10K run
  • Half marathon
  • Ultra run
  • Sat 9 May
  • £40-£50
Cardiff, UK

Radyr Trail Races: Half Marathon and Marathon

  • Half marathon
  • Marathon
  • Sat 9 - Sun 10 May
  • £35-£80
Reading, Berkshire, UK

Goring Gap Trails

  • Ultra run 2
  • Long distance walk
  • Short walk 2
  • Half marathon
  • Sat 9 May
  • £118-£120
Chesham, Buckinghamshire, UK

Chiltern Hills 100K

  • 100 km trail running
  • Sat 9 May
  • £93-£95
Blairgowrie, Perth and Kinross, UK

Cateran Trail Ultramarathon

  • 55 miles trail running + 7450 ft ascent

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