Flat Marathons in UK
Find flat 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.
- 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
- Sun 13 Sep
- £49.50-£56.50
Richmond Marathon
Run 'The world's most scenic marathon' through London's greenest borough including Richmond Bridge and the Tow Path. Start inside the Kew Gardens with family fun music festival to finish!
- 26.2 miles road running + 160 m 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
- Sun 20 Sep
- £40-£42
Yabba Dabba Doo | Marathon
It's time to have some fun! This multi-lap event is great for increasing distance, and runners will complete a marathon around the beautiful reservoir for their Yabba Dabba Doo medal!
- 26.2 miles multi terrain running
- Sun 27 Sep
- £37.50-£39.50
SoBo Series | Volume 4 | Stop me (if you think you've heard this one before)
Set along the beachfront promenade at Southbourne (SoBo), choose your own distance from 5K to ultra, along this flat, tarmacked, lapped route suitable for all abilities.
- 7 hrs road running
- Sun 27 Sep
- £35-£37
RUN Barnstaple | Marathon
Flat, fast and an ideal setting for those aiming to achieve a personal best and is a great choice when looking for a marathon that is eligible for good for age for the London Marathon.
- 26.2 miles road running
- Sun 4 Oct
- £53-£55
Thames Meander Autumn | 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
- Sun 25 Oct
- £37.50-£39.50
Wight Lines
Enjoy stunning coastal views on this flexible-distance run at Milford on Sea, following an out-and-back route beside Sturt Pond and the Isle of Wight — perfect for all abilities.
- 7 hrs trail running + 47 ft ascent
- Sun 25 Oct
- £37-£39
Windsor Dorney Lakeside Marathon
Race a fast, flat and traffic-free marathon at Dorney Lake, the London 2012 Olympic rowing venue, with lakeside scenery, great atmosphere and excellent runner support throughout.
- 26.2 miles road running
- Sat 31 Oct
- £39-£41
Hubble Bubble & Ghostly 1 Mile | Marathon
A Halloween-themed marathon you won't want to miss, bringing together runners of all abilities to share memories in what they love to do. Reach the finish to enjoy tasty Halloween treats.
- 26.2 miles trail running + 288 ft ascent
- Sun 8 Nov
- £25-£37
Remembrance Run | South | Marathon
Your chance to remember those who have given the ultimate sacrifice during conflicts around the world, with a two-minute silence, a marathon, then a Remembrance medal, a goody bag and a special pin.
- 26.2 miles trail running
- Sat 12 Dec
- £39-£41
Crikey its the Christmas Cracker | Day 1 | Marathon
Take on this out and back course to really get in the Christmas spirit. This event isn't just about the race itself, the activities at Race HQ are bound start a jolly atmosphere!
- 26.2 miles trail running
- Sun 13 Dec
- £37.50-£39.50
Step into Christmas
Set along the beachfront promenade at Southbourne (SoBo), choose your own distance from 5K to ultra, along this flat, tarmacked, lapped route suitable for all abilities.
- 7 hrs road running
- Sun 13 Dec
- £39-£41
Crikey its the Christmas Cracker | Day 2 | Marathon
An out and back course to really get you in the Christmas spirit with activities at Race HQ bound start a jolly atmosphere, whether you want a PB or to challenge yourself over marathon distance.
- 26.2 miles trail running
- Sun 13 Dec
- £22-£34
The Snow Globe Gallop Bobble Hat Run | North | Marathon
Come and join in the Snow Globe Gallop, get a few miles under your belt before the Christmas festivities really kick in plus you will get a bobble hat for all your effort!
- 26.2 miles trail running
- Sat 26 Dec
- £33-£35
Boxing Day Challenge | Marathon
Come and join the day of running and aim to complete a marathon at your own pace on a flat, out-and-back route along the River Thames then receive a bespoke medal and goody bag at the finish!
- 26.2 miles trail running
- Sun 18 Apr 2027
- £89.99-£169
adidas Manchester Marathon
Experience the UK’s friendliest and flattest major marathon with huge crowd support on a route with PB potential plus chunky medals and relay options.
- 26.2 miles road running + 55 m ascent
- Sun 3 May
- £48-£50
Exeter Live Better Marathon and Community 5 Mile | Marathon
- 26.2 miles road running
- Sat 20 Jun
- £43-£60
The Sunset Running Festival, Edinburgh | Marathon
- 26.2 miles road running
- Sun 28 Jun
- £60
Tarka Trail 50K, Marathon, Half, 10K & Colourburst Races | Marathon
- 26.2 miles trail running
- Sun 13 Sep
- £66-£68
New Forest Marathon | Full Marathon
- 26.2 miles multi terrain running + 160 ft ascent