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Trail Marathons in May 2026

Find trail marathons near me 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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The aim of the midweek runs is to hold events as cheaply as possible in order for people to be able to build their numbers or simply to help people achieve their own goals at an affordable price.
  • Fri 1 May 2026
  • £20-£27
Egham, Surrey, UK

Midweek Chasing Numbers May | Marathon

The aim of the midweek runs is to hold events as cheaply as possible in order for people to be able to build their numbers or simply to help people achieve their own goals at an affordable price.

  • Enter online
  • Age 18 & over
  • 26.2 miles trail running + 0 ft ascent
Come and join the day of running and aim to complete a midweek 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 2026
  • £20-£27
Staines, Surrey, UK

Bank Holiday Madness May | Marathon

Come and join the day of running and aim to complete a midweek 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
  • Traffic free
  • Age 18 & over
  • 26.2 miles trail running + 0 ft ascent
Whether you are a Durham resident, you just love the area, or you fancy running along the River Wear with views of the Cathedral, then this looped marathon is for you! Durham-themed medals too.
  • Thu 21 May 2026
  • £17-£34
Durham, County Durham, UK

Dun Holm Challenge | Day 1 | Marathon

Whether you are a Durham resident, you just love the area, or you fancy running along the River Wear with views of the Cathedral, then this looped marathon is for you! Durham-themed medals too.

  • Enter online
  • Age 18 & over
  • 26.2 miles trail running + 72 ft ascent
Whether you are a Durham resident, you just love the area, or you fancy running along the River Wear with views of the Cathedral, then this looped marathon is for you! Durham-themed medals too.
  • Fri 22 May 2026
  • £17-£34
Durham, County Durham, UK

Dun Holm Challenge - Day 2 | Marathon

Whether you are a Durham resident, you just love the area, or you fancy running along the River Wear with views of the Cathedral, then this looped marathon is for you! Durham-themed medals too.

  • Enter online
  • Undulating
  • Age 18 & over
  • 26.2 miles trail running + 72 ft ascent
Can you survive Farmmageddon? A fantastic marathon through the lovely grounds of Hyde Hall Farm as part of the Farmmageddon endurance weekend.
  • Sat 23 May 2026
  • £33-£38
Buntingford, Hertfordshire, UK

Farmmageddon | Full Marathon

Can you survive Farmmageddon? A fantastic marathon through the lovely grounds of Hyde Hall Farm as part of the Farmmageddon endurance weekend.

  • Chip timing
  • Enter online
  • Traffic free
  • Age 18 & over
  • 26.2 miles trail running + 164 ft ascent
Whether you are a Durham resident, you just love the area, or you fancy running along the River Wear with views of the Cathedral, then this looped marathon is for you! Durham-themed medals too.
  • Sat 23 May 2026
  • £17-£34
Durham, County Durham, UK

Dun Holm Challenge | Day 3 | Marathon

Whether you are a Durham resident, you just love the area, or you fancy running along the River Wear with views of the Cathedral, then this looped marathon is for you! Durham-themed medals too.

  • Enter online
  • Undulating
  • Age 18 & over
  • 26.2 miles trail running + 72 ft ascent
Race through the beautiful castle grounds over marathon distance for all levels from first-timers to elite then celebrate with friends and family in the festival village.
  • Sun 24 May 2026
  • £52-£65
Gort, Ireland

Lough Cutra Castle | Marathon

Race through the beautiful castle grounds over marathon distance for all levels from first-timers to elite then celebrate with friends and family in the festival village.

  • Chip timing
  • Enter online
  • Age 18 & over
  • 42.2 km trail running
Based out of East Hull this race will run out on the TransPennine Trail towards Hornsea, it should allow runners to enjoy a flat even surface ideal or both beginners or for seasoned athletes...
  • Sun 24 May 2026
  • £40-£42
Hull, East Yorkshire, UK

Get the Hull out of Here | Marathon

Based out of East Hull this race will run out on the TransPennine Trail towards Hornsea, it should allow runners to enjoy a flat even surface ideal or both beginners or for seasoned athletes...

  • Enter online
  • Flat
  • PB
  • Age 18 & over
  • 26.2 miles trail running + 66 ft ascent
Whether you are a Durham resident, you just love the area, or you fancy running along the River Wear with views of the Cathedral, then this looped marathon is for you! Durham-themed medals too.
  • Sun 24 May 2026
  • £17-£34
Durham, County Durham, UK

Dun Holm Challenge | Day 4 | Marathon

Whether you are a Durham resident, you just love the area, or you fancy running along the River Wear with views of the Cathedral, then this looped marathon is for you! Durham-themed medals too.

  • Enter online
  • Undulating
  • Age 18 & over
  • 26.2 miles trail running + 72 ft ascent
Whether you are a Durham resident, you just love the area, or you fancy running along the River Wear with views of the Cathedral, then this lapped marathon is for you! Durham-themed medals too.
  • Mon 25 May 2026
  • £17-£34
Durham, County Durham, UK

Dun Holm Challenge | Day 5 | Marathon

Whether you are a Durham resident, you just love the area, or you fancy running along the River Wear with views of the Cathedral, then this lapped marathon is for you! Durham-themed medals too.

  • Enter online
  • Undulating
  • Age 18 & over
  • 26.2 miles trail running + 72 ft ascent
A 42K trail run as part of the Lake District Running Festival in an iconic location with a grandstand finish, wooden medal, free event photos and, more importantly, cake...
  • Sun 31 May 2026
  • £55
Ambleside, Cumbria, UK

Lake District Running Festival | Grasmere Gallop 42km Trail Run

A 42K trail run as part of the Lake District Running Festival in an iconic location with a grandstand finish, wooden medal, free event photos and, more importantly, cake...

  • GPS tracking
  • Mountainous
  • Age 18 & over
  • 42 km trail running + 1905 m ascent
  • Sat 2 - Mon 4 May 2026
Keswick, Cumbria, UK

SCARPA Great Lakeland 3Day

  • 3 days fell running
  • Sun 3 May 2026
Shipston-on-Stour, Warwickshire, UK

Tempo Trail Races | Marathon

  • 26.2 miles trail running + 1743 ft ascent
  • Sat 9 May 2026
Cardiff, UK

Radyr Trail Races: Half Marathon and Marathon | Marathon

  • 26.2 miles trail running
  • Sun 10 May 2026
Thirsk, North Yorkshire, UK

Hardmoors 26.2 White Horse Trail Marathon | Marathon

  • 29 miles trail running + 3400 ft ascent
  • Sat 16 May 2026
Plymouth, Devon, UK

Race The Tide | Long Marathon

  • 28.5 miles trail running

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