Trail Half marathons in UK in August 2026
Find trail half marathons in UK in August 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.
- Sun 9 Aug
- £43-£45
Thames Meander Summer | Half Marathon
Stunningly scenic riverside route along the Thames towpath. Flat, fast and very runnable with great runner support. The marathon on the same day was previously rated one of the top 10 UK marathons.
- 13.1 miles trail running + 300 ft ascent
- Sun 9 Aug
- £40-£45
Durty Trail Weekender | 25K Hill Hopper
A testing route with climbs, descents, and panoramic vistas for those seeking a serious challenge, across remote trails demanding stamina, strength, and focus throughout the course.
- 25 km trail running + 865 m ascent
- Fri 14 Aug
- £15-£27
Midweek Chasing Numbers Aug | Half 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.
- 13.1 miles trail running
- Sat 15 Aug
- £23-£35
I'm Not Throwing Away My Shot Run | Half Marathon
If you're a fan of the musical Hamilton, then this is the run for you! This is an amazing Hamilton-inspired event with an incredible themed medal too.
- 13.1 miles trail running
- Sat 15 Aug
- £28-£30
Sir Titus Summer Trot | Half Marathon
Enjoy a trip up the Leeds and Liverpool Canal this summer over a range of distances, all along the flat and even towpath. This event is perfect for runners of all abilities.
- 13.1 miles trail running + 253 ft ascent
- Fri 21 Aug
- £15-£27
Midweek Medal Madness Run August | Half 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.
- 13.1 miles trail running
- Sat 22 Aug
- £30-£32
Summer Extravaganza | Half Marathon
Soak up summer miles on a flat, fast canal towpath, with great support, generous treats and distances for every runner including half marathon — a Yorkshire day out to remember.
- 13.1 miles trail running + 144 ft ascent
- Sun 30 Aug
- £15-£29
GNR & Time Turner | Durham
Whether you're looking to get some miles under your belt before The Great North Run or you just fancy a run along the beautiful River Wear, then this is the event for you!
- Trail run
- 5K run
- 10K run
- Half marathon
- Marathon
- + 3 more races
- Sat 1 Aug
- £30-£35
Great Barrow Challenge | Day 10 | Half Marathon
- 13.1 miles trail running + 646 ft ascent
- Sat 1 Aug
- £50-£54
Dartmoor Big Day Out | The Great Escape
- 15.5 miles trail running
- Sat 8 Aug
- £10-£49
The Maverick Ochil Hills Trail | Half Marathon - 26K
- 26 km trail running + 961 m ascent
- Sun 9 Aug
- £36-£38
Hardmoors 26.2 Farndale Trail Races | Half Marathon
- 16.5 miles trail running + 2300 ft ascent
- Sat 22 Aug
- £36-£41
INFERNO - Edale's Ring of Hell | Half Marathon
- 15.5 miles trail running + 4000 ft ascent
- Sun 23 Aug
- £32-£37
Borrowdale Trail Half Marathon
- 13 miles trail running + 765 m ascent
- Sun 30 Aug
- £36-£38
Hardmoors 26.2 Roseberry Trail Races | Half Marathon
- 14.5 miles trail running + 3200 ft ascent