Flat Ultra runs
Find flat ultra runs near me 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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Select an event for photos, video, route, location, reviews, entry fees and how to enter.
- Sat 18 Apr
- £16-£35
The London Run
Not made it into The London Marathon but still fancy getting a super awesome medal based on the iconic race set in the capital city?
- Trail run
- 5K run
- 10K run
- Half marathon
- Marathon
- + 3 more races
- Wed 22 - Sun 26 Apr
- £125-£350
- Early bird
Thames Ring Series
Take on this legendary 250-mile ultra following rivers and canals in a gruelling anti-clockwise loop through stunning countryside and historic towns within 100 hours.
- Ultra run 3
- Fri 1 May
- £100-£102
Portland Pig BackYard Ultra
4.167 miles on the hour, every hour, until the there is only one left standing. Have you got what it takes for just one more loop?
- 1 day multi terrain running
- Mon 4 May
- £16-£27
Bank Holiday Madness May
This Bank Holiday event is run 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.
- Trail run
- 5K run
- 10K run
- Half marathon
- Marathon
- + 3 more races
- Sun 10 May
- £16-£35
The Spring Lucky Dip Run
Come and join the Spring Lucky Dip Run! There is no set medal for this race; instead, you will get to choose your own from a selection of medals from past events!
- Trail run
- 5K run
- 10K run
- Half marathon
- Marathon
- + 3 more races
- Sat 16 May
- £16-£35
Rocky at 50 Run
Come and celebrate 50 years since the release of the iconic Rocky film! Have you got the Eye of The Tiger, the guts to get the glory and the will to rise up to the challenge and run?
- Road run
- 5K run
- 10K run
- Half marathon
- Marathon
- + 3 more races
- Sun 17 May
- £37.50-£39.50
SoBo Series | Volume 3 | Good Vibrations
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
- Sat 30 May
- £18-£35
Rocky at 50 Run | Wales
Come and celebrate 50 years since the release of the iconic Rocky film! Have you got the Eye of The Tiger, the guts to get the glory and the will to rise up to the challenge and run?
- Road run
- 5K run
- 10K run
- Half marathon
- Marathon
- + 3 more races
- Sun 31 May
- £27-£38
Circuit Du Sore Legs
In its sixth year! Come take on the challenge of the track at Wodson Park. Do you have it in you to complete your distance on a 400-metre athletics track?
- 5K run
- 10K run
- Half marathon
- Marathon
- 50K ultra run
- + 1 more race
- Sat 6 Jun
- £80-£130
Suffolk Back Yard Ultra Festival
Push your limits at the highly competitive Summer Suffolk Backyard Ultra — run 4.167 miles every hour, on the hour, until only one runner remains standing.
- Fixed time runs 2
- Ultra run
- Sat 6 Jun
- £15-£35
Strawberry Shortcake Scamper
Who remembers the character Strawberry Shortcake and all her adorable friends like Orange Blossom and Lemon Meringue?! Here's your chance for a medal of her!
- Road run
- 5K run
- 10K run
- Half marathon
- Marathon
- + 3 more races
- Sun 7 Jun
- £16-£35
The Summer Lucky Dip Run
Come and join the Summer Lucky Dip Run! There is no set medal for this race, instead, you will get to choose your own from a selection of medals from past events!
- Road run
- 5K run
- 10K run
- Half marathon
- Marathon
- + 3 more races
- Sun 14 Jun
- £16-£35
Labyrinth 40th Anniversary Run
Come and celebrate the 40th anniversary of the iconic film released in 1986! A cult classic from the 80s, one of Charlotte's favourite films, and who doesn't love David Bowie as the Goblin King!
- Road run
- 5K run
- 10K run
- Half marathon
- Marathon
- + 3 more races
- Sun 21 Jun
- £16-£29
Lord of The Run | North
Come and join in for Lord of The Run run! Whether you love the series of books and the film franchise 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
- Sun 5 Jul
- £16-£35
Will Run For Ice Cream
A run that you don't want to miss! The medal is incredible, and you can celebrate your achievements with some well-deserved ice cream!
- Road run
- 5K run
- 10K run
- Half marathon
- Marathon
- + 3 more races
- Sat 11 Jul
- £16-£35
Ooops I Ran It Again
Who hasn't completed a race, sworn they will never run again and then booked onto another one the following day?!
- Road run
- 5K run
- 10K run
- Half marathon
- Marathon
- + 3 more races
- Sat 11 Jul
- £54-£56
It's cracking t'flags at Summer Extravaganza | Ultra Marathon
Runners will trail along the tranquil Leeds to Liverpool Canal (Kirkstall) on an entirely flat route, making it perfect for beginners who want to take in the beautiful lakeside sights.
- 32 miles trail running
- Sat 8 Aug
- £56-£95
ATW Odyssey12
The ATW Odyssey 12hr Run is more than just a running event, its a journey of self-discovery through the beautiful multi-terrain footpaths around St Neots.
- 12 hrs trail running
- Sun 9 Aug
- £16-£35
Great British Bake Run
Who doesn't like cake?! The Great British Bake Run is back for another year! The medal is a fantastic cupcake which doubles up as a magnet to go on your fridge!
- Road run
- 5K run
- 10K run
- Half marathon
- Marathon
- + 3 more races
- Sat 15 Aug
- £54-£56
Sir Titus Summer Trot | Ultra 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.
- 50 km trail running
- Sun 30 Aug
- £16-£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 12 Sep
- £80-£120
Thetford Back Yard Ultra Festival
Push your limits in this late-summer Thetford Backyard Ultra — run 4.167 miles every hour, on the hour, until only one runner remains standing.
- Fixed time runs 2
- Ultra run
- Sat 19 Sep
- £54-£56
Oktoberfest | Ultra Marathon
Get your Oompah vibe on and enjoy a trip up the Leeds and Liverpool Canal. An ultra marathon to warm the depths of your heart along the flat, even towpath - this event is perfect for all abilities.
- 33 miles trail running + 243 ft ascent
- 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
- Wed 30 Sep
- £34.20-£40
Kingfisher Challenge
Mature woodland, waterways and open grassland - it’s simply trail running perfection! Run as many 5K laps as you wish in the time limit, then receive your well-deserved medal, flapjack and beer.
- 6 hrs trail running