Trail Marathons in UK
Find trail 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 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
- £59.99-£64.99
Snowdonia Trail Marathon Eryri
The most epic trail marathon in Wales! Iconic and spectacular trails, circumnavigating then climbing the slopes of Wales' highest peak - Yr Wyddfa (Snowdon).
- 27.3 miles trail running + 1685 m ascent
- Sun 12 Jul
- £51.95
Rasselbock 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!
- 26.2 miles trail running + 1384 ft ascent
- Sat 18 Jul
- £89
Gower Peninsula Ultra Challenge | Marathon 42K Loop
A classic distance from Penrice Castle on a loop featuring Oxwich Bay and its nature reserve, the stunning Wales Coast Path, picnic at Rhossili, the Gower Way then a celebration and medal!
- 42 km multi terrain running + 900 m ascent
- 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
- Sun 19 Jul
- £50.50-£60
Revesby Running Festival | Challenge The Estate
A new and totally unique running challenge where you aim to run 10 x 5K laps which get faster the more you complete. How far can you go?
- 1 day trail running
- 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 | 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.
- 26.2 miles trail running
- Sat 25 Jul
- £20-£22
Rumble In The Jumble III | 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.
- 26.2 miles trail running
- Sun 26 Jul
- £55
Bright Skies Surrey Hills | Marathon
The Bright Skies Marathon is a thrilling daytime trail race following an undulating yomp through Surrey's rolling hills and the Denbies Estate in the Surrey Hills.
- 26.2 miles trail running
- Sat 8 Aug
- £56-£95
ATW First To Full Triathlon Festival | 12hr Solo
Alongside the multisports, there’s a 12-hour endurance run where you can push your limits as an individual or join forces in a relay team. Run as far as you can in 12 hours and soak up the support.
- 12 hrs trail running
- Sun 9 Aug
- £53-£55
Thames Meander Summer | Marathon
Previously rated one of the top 10 UK marathons by Runners World! Stunningly scenic riverside routes along the Thames towpath. Flat, fast and very runnable with great runner support.
- 26.2 miles trail running + 600 ft ascent
- Fri 14 Aug
- £15-£27
Midweek Chasing Numbers Aug | 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.
- 26.2 miles trail running
- Sat 15 Aug
- £40-£42
Sir Titus Summer Trot | 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.
- 26.2 miles trail running
- Sat 15 Aug
- £23-£35
I'm Not Throwing Away My Shot Run | 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.
- 26.2 miles trail running
- Fri 21 Aug
- £15-£27
Midweek Medal Madness Run August | 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.
- 26.2 miles trail running
- Sat 22 Aug
- £40-£42
Summer Extravaganza | Marathon
Soak up summer miles on a flat, fast canal towpath, with great support, generous treats and distances for every runner including marathon — a Yorkshire day out to remember.
- 26.2 miles trail running + 288 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
- £40-£42
Hip Hip Hooray it's Hornsea | Marathon
We all love to be beside the seaside, so why not enjoy a trail marathon from the coast at Hornsea? You can grab yourself fish and chips and an ice cream from the front after the race.
- 26.2 miles trail running + 322 ft ascent
- Sat 12 Sep
- £53-£55
Bewl Water Autumn | Marathon
Previously rated one of the top UK marathons! Scenic mixed-terrain route around Bewl Water on undulating rural wooded trails and quiet country lanes.
- 26.5 miles trail running + 1420 ft ascent
- Sat 19 Sep
- £39-£41
Oktoberfest | Marathon
Get your Oompah vibe on and enjoy a trip up the Leeds and Liverpool Canal. A marathon to warm the depths of your heart along the flat, even towpath - this event is perfect for all abilities.
- 26.2 miles trail running + 210 ft ascent
- Sat 19 Sep
- £33-£38
The Lucky Horseshoe | Full 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!
- 26.2 miles trail running + 1260 ft ascent
- Sun 20 Sep
- £37.50-£39.50
Something to Talk About
Set in the heart of the beautiful New Forest, with a Grade I listed 'calendar' manor house as the backdrop, this is a technical trail loop suitable for all abilities.
- 7 hrs trail running + 404 ft ascent
- Sun 27 Sep
- £42
Race on the Chase | Marathon
8th Anniversary! The Race on the Chase Marathon has already gained a strong reputation with runners for its great trails, views and friendly atmosphere. It's trail running heaven.
- 26.2 miles trail running + 1929 ft ascent
- Sun 27 Sep
- £31-£38
The Wensum Way Trail | Full Marathon
Enjoy the stunning route, push your limits, and, of course, earn your race bling over marathon distance. Runners will love the fuel and encouragement with every lap!
- 26.2 miles trail running + 496 ft ascent