Trail Half marathons in UK
Find trail half marathons in UK in 2026/2027 - filter by date, location or category, display on a map or use the advanced search to find your perfect race.
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MapEvent listings
Select an event for photos, video, route, location, reviews, entry fees and how to enter.
- Sun 5 Jul
- £33-£38
Summer Ready Run
Come and join the fun in a 4 or 6-hour running challenge at Ferry Meadows! Run as much as you want through the forest on a multi-terrain loop. Run, rest, then head out for some more.
- Multi-terrain run 2
- Sun 5 Jul
- £32
Cannock Chase Forest Half Marathon
Join the early summer racing joy and race between the trees at Cannock Chase Forest! It's time to treat yourself!
- 13.1 miles trail running + 1385 ft ascent
- Fri 10 Jul
- £15-£27
Midweek Chasing Numbers July | 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 11 Jul
- £30-£32
Sithee at Slawit Again | Half Marathon
Starting and finishing in the village of Slaithwaite, pronounced 'Slawit' to the locals, this is perhaps the most undulating canal by a long chalk. Bespoke medal, drinks and goodies for all.
- 13.1 miles trail running + 417 ft ascent
- Sun 12 Jul
- £27-£38
Norfolk Festival of Running
Run, lap, repeat — from 5K to ultra-marathon across scenic trails at Bawsey Country Park, with friendly support, flexible distances and the freedom to run your own way.
- Fixed time runs 2
- Sun 12 Jul
- £44.99-£49.99
Snowdonia Trail Half Marathon Eryri
Wales' spectacular mountain half marathon! A tough route with over 1,192m of ascent, most of which is up Wales’ highest peak, with incredible views all the way to Anglesey and a downhill finish too.
- 12.9 miles trail running + 3959 ft ascent
- Sun 12 Jul
- £41.95
Rasselbock Half Marathon
Welcome to the stunning Sherwood Pines for an incredible day of running in the forest - whether it's your first event, you're going for a PB or if you just want a day in the forest with friends!
- 13.1 miles trail running + 695 ft ascent
- Sun 19 Jul
- £15-£60
Revesby Running Festival
Runs with unparalleled scenery making them some of the most picturesque events in the area, on a private estate. 5K, 10K, half marathon or a totally unique running challenge 'Challenge The Estate'.
- 5K run
- 10K run
- Half marathon
- Multi-terrain run
- Sun 19 Jul
- £15-£29
Ooops I Ran It Again | North
Who hasn't completed a race, sworn they will never run again and then booked onto another one the following day?!
- Trail run
- 5K run
- 10K run
- Half marathon
- Marathon
- + 3 more races
- Thu 23 Jul - Sat 1 Aug
- £300-£350
Great Barrow Challenge | 10 events in 10 days
10 running events in 10 days in the beautiful Suffolk countryside. Run 5K, 10K, Half Marathon, Marathon or an Ultra every day for 10 days in this unique endurance challenge!
- 10 days trail running
- Fri 24 Jul
- £15-£27
Midweek Medal Madness Run July | 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 25 Jul
- £20-£22
Rumble In The Jumble III | Half Marathon
Welcome to a 6-hour timed running event where you can run a 5K all the way up to an ultra marathon on an out-and-back route within the time limit, with fuel stations, medal and goody bag.
- 13.1 miles trail running
- Sun 26 Jul
- £35
Bright Skies Surrey Hills | Half Marathon
The Bright Skies Half Marathon is a thrilling daytime trail race following an undulating yomp through Surrey's rolling hills and the Denbies Estate in the Surrey Hills.
- 13.1 miles trail running
- 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 5 Sep
- £30-£32
Hip Hip Hooray it's Hornsea | Half Marathon
We all love to be beside the seaside, so why not enjoy a trail half marathon from the coast at Hornsea? You can grab yourself fish and chips and an ice cream from the front after the race.
- 13.1 miles trail running + 161 ft ascent
- Sat 12 Sep
- £43-£45
Bewl Water Autumn | Half Marathon
Scenic mixed-terrain route around Bewl Water on undulating rural wooded trails and quiet country lanes. The marathon course at the same venue was previously rated one of the top UK marathons.
- 13.1 miles trail running + 710 ft ascent
- Sun 13 Sep
- £38.50
Cheshire 3 Peaks Half Marathon
This event takes in some of Cheshire's finest country, and certainly its highest! Summit Tegg's nose, Shuttlingsloe and Shining Tor with views, diverse terrain and finisher medal.
- 13.1 miles trail running + 847 m ascent
- Sat 19 Sep
- £29-£36
The Lucky Horseshoe | Half Marathon
Your race, your pace, your distance! Utilising the Gallops route at the amazing Suffolk Running Centre which takes you through to Newmarket so you may get to see the race horses in training!
- 13.1 miles trail running