Flat Ultra runs in UK
Find flat ultra runs 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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Select an event for photos, video, route, location, reviews, entry fees and how to enter.
- Sun 1 Feb
- £60
Peddars Way Ultra
A 48-mile route through historical Suffolk and Norfolk, starting from Knettishall Heath Nature reserve and running north to Holme-next-the-Sea on the Norfolk Coast.
- 48 miles trail running + 1923 ft ascent
- Sun 1 Feb
- £58
Skipton Sweetie Skedaddle | Ultra Marathon
Enjoy a trip up the Leeds and Liverpool Canal this winter on your choice of distance, along the flat towpath for runners of all abilities, from novices to PB chasers!
- 30 miles trail running
- Sat 14 Feb
- £16-£35
The Racoon Rocket Run
Come and join The Racoon Rocket Run and earn yourself a beautiful medal with an adorable picture of a fluffy raccoon on it! What more could you ask for?
- Trail run
- 5K run
- 10K run
- Half marathon
- Marathon
- + 3 more races
- Sat 14 Feb
- £54-£56
Besotted at Bingley | Ultra Marathon
Enjoy a trip up the Leeds and Liverpool Canal this Valentines. Perfect for runners of all abilities, from novices to Ultra PB chasers, this is one to warm the depths of your heart.
- 32 miles trail running
- Sun 15 Feb
- £37.50-£39.50
SoBo Series | Volume 2 | My Funny Valentine
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 21 Feb
- £16-£35
The Rubber Ducky Dash
For this run, not only will you earn a super cute rubber duck themed medal, but also your very own rubber ducky to take home with you!
- Trail run
- 5K run
- 10K run
- Half marathon
- Marathon
- + 3 more races
- Sun 22 Feb
- £15-£34
The Doughnut Dash | Northampton
Come and join The Doughnut Dash! At this event you can earn yourself a super fun medal along with some doughnuts at the finish line to celebrate your achievement!
- Trail run
- 5K run
- 10K run
- Half marathon
- Marathon
- + 3 more races
- Sun 22 Feb
- £16-£35
The Wacky Run
Time to get nostalgic with the Wacky Run! I'm sure a lot of us can remember this fun cartoon and some of the crazy characters such as Dick Dastardly and Muttley, Penelope Pitstop and The Ant Hill Mob.
- Road run
- 5K run
- 10K run
- Half marathon
- Marathon
- + 3 more races
- Sat 7 Mar
- £16-£35
The Panda Plod
Here's another animal-inspired event for you. The featured animal this time is a panda! The medal, as always, is incredible and definitely one to add to your collection!
- Trail run
- 5K run
- 10K run
- Half marathon
- Marathon
- + 3 more races
- Sat 7 Mar
- £73-£115
Kent Backyard Ultra | Round Three: Sholden
Flat, fast and friendly at Lillyroo’s near Deal, one of Europe's flattest backyard courses. Run a loop (a 'yard') every hour, on the hour, until only one runner remains. Miss the bell, and you're out.
- Fixed time runs
- Ultra run
- Sat 7 Mar
- £33-£35
London Marathon Long Training Run | Day 1
Build marathon confidence on a fully supported long run, choosing your distance, fuelling every lap and training smart in a relaxed, friendly environment with likeminded runners.
- 7 hrs trail running
- Sat 14 Mar
- £16-£35
The Sloth Scamper
Come and join in The Sloth Scamper, slow is the new fast and you can earn yourself a medal with an adorable sloth on to boot - anyone know what a group of sloths is called?
- Trail run
- 5K run
- 10K run
- Half marathon
- Marathon
- + 3 more races
- Sat 14 Mar
- £54-£56
Spring Time Canal Canter | Ultra
Fast, flat, PB-grabbing ultra on traffic-free trails and the canal towpath with a bespoke medal and treats at the finish line. First-time ultra runners welcome.
- 32 miles trail running
- Sat 14 Mar
- £33-£35
London Marathon Long Training Run | Day 2
Build marathon confidence on a fully supported long run, choosing your distance, fuelling every lap and training smart in a relaxed, friendly environment with likeminded runners.
- 7 hrs trail running
- Sun 15 Mar
- £18-£38
The Dashing Dog Charity Run | Wales
Come and join the Dashing Dog Charity run in the picturesque Dare Valley Country Park. Not only is the scenery beautiful but you will earn one of these awesome medals!
- Road run
- 5K run
- 10K run
- Half marathon
- Marathon
- + 3 more races
- Sat 21 Mar
- £16-£35
The Flying Fox
Come and join The Flying Fox event! Are you as cunning and as quick as a fox and fancy showcasing your running skills?
- Trail run
- 5K run
- 10K run
- Half marathon
- Marathon
- + 3 more races
- Sat 21 Mar
- £15-£34
The Flying Fox | Northampton
Come and join in for The Flying Fox event! Are you as cunning and as quick as a fox and fancy showcasing your running skills?
- Trail run
- 5K run
- 10K run
- Half marathon
- Marathon
- + 3 more races
- Sat 21 Mar
- £33-£35
London Marathon Long Training Run | Day 3
Build marathon confidence on a fully supported long run, choosing your distance, fuelling every lap and training smart in a relaxed, friendly environment with like-minded runners.
- 7 hrs trail running
- Sun 22 Mar
- £18-£40
The Dashing Dog Charity Run
Come and join in for Dashing Dog Charity run along the picturesque River Thames, not only is the scenery beautiful and you will earn one of the awesome medals!
- Road run
- 5K run
- 10K run
- Half marathon
- Marathon
- + 3 more races
- Sun 29 Mar
- £54-£56
Sir Titus March Mayhem | Ultra Marathon
Spring along the Leeds and Liverpool Canal with the Spring Tide Sir Titus Trot along the flat, even towpath. Perfect for all abilities, it tends to sell out very quickly.
- 52 km trail running
- Sun 29 Mar
- £17-£29
Fraggle Run | North | Time Challenge
Who doesn't know and love The Fraggles! Come and join in the Fraggle Run Time Challenge and earn a medal based on the adorable little creatures!
- 7 hrs trail running
- Sat 4 Apr
- £33-£35
London Marathon Long Training Run | Day 5
Build marathon confidence on a fully supported long run, choosing your distance, fuelling every lap and training smart in a relaxed, friendly environment with likeminded runners.
- 7 hrs trail running
- Sun 5 Apr
- £54-£56
Lets Motor along the Towpath | Rodley | Ultra Marathon
You'd be an April Fool to miss this one. Enjoy a trip up the flat and event towpath of the Leeds and Liverpool Canal from Rodley. One to warm the depths of your heart.
- 33 miles trail running + 528 ft ascent
- Sat 11 Apr
- £16-£35
Love it or Hate it Run
Whether you are in the love it or hate it camp, I think we can all agree that the medal is super cute and definitely one which you need to add to your collection!
- Trail run
- 5K run
- 10K run
- Half marathon
- Marathon
- + 3 more races
- Sun 12 Apr
- £18-£36
The Dashing Dog Charity Run | North
Come and join the Dashing Dog Charity run along the picturesque River Wear. Not only is the scenery beautiful but you will earn one of these awesome medals!
- Trail run
- 5K run
- 10K run
- Half marathon
- Marathon
- + 3 more races