50K ultra runs
A 50K ultra is the most popular way to step beyond the marathon. Events combine endurance, adventure and achievable distances, making them ideal for first-time ultra runners. Use the filters to find 50K ultras by date, location or terrain. Read more
A 50K ultra run covers just over 31 miles, offering a manageable introduction to ultra-distance running without the commitment of longer events. Many 50K ultras take place on scenic trails, rolling countryside or multi-loop courses, making pacing and nutrition easier to manage.
These events are popular with marathon runners looking for a new challenge, as well as trail runners keen to explore longer distances. You’ll find beginner-friendly options with generous cut-off times alongside more technical courses for experienced off-road runners.
Use the filters to narrow your search by date, location or route type — to find your perfect ultra.
If you’re aiming to go further, you can also explore our 100K ultras or 100-mile ultra events once you’ve built confidence at this distance.
Want to read more? Read the guides, tips and advice from our blog.
Got questions? Read our FAQs for answers.
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Map view50K ultra runs 2026–2027
Discover 50K ultras across the UK and beyond and get ready for your next start line.
- Sat 24 Jan
- £23-£35
The Winter Lucky Dip Run | 50K
Come and join in Winter 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!
- 50 km trail running
- Sat 24 Jan
- £22-£35
Spice Up Your Run | Wales | 50K
If you're looking to spice up your run or you need some running like you've never needed running before, then this is the event for you! Come and celebrate all things Spice Girls!
- 50 km trail running
- Sat 7 Feb
- £23-£35
The Highland Hotfoot | 50K
Come and join in The Highland Hotfoot because who doesn't love those furry Highland Cows and therefore want a medal of them!
- 50 km trail running
- Sat 14 Feb
- £26-£28
Hull Culture Run I | Ultra Marathon
Welcome to a 6-hour timed running event where you can run an ultra marathon at your own pace on an out-and-back route, with fuel stations each lap, and a Rhino medal and goody bag at the finish.
- 32 miles trail running + 2422 ft ascent
- Sat 14 Feb
- £23-£35
The Racoon Rocket Run | 50K
Come and join The Racoon Rocket Run 50K and earn yourself a beautiful medal with an adorable picture of a fluffy raccoon on it! What more could you ask for?
- 50 km trail running
- Sun 15 Feb
- £16-£29
Smurf Run | North
Come and join in Smurf Run, who doesn't love those little blue characters and therefore a medal reflecting how adorable they are!
- Trail run
- 5K run
- 10K run
- Half marathon
- Marathon
- + 3 more races
- Sat 21 Feb
- £23-£35
The Rubber Ducky Dash | 50K
For this 50K ultra, not only will you earn a super cute rubber duck themed medal, but also your very own rubber ducky to take home with you!
- 50 km trail running
- Sun 22 Feb
- £22-£34
The Doughnut Dash | Northampton | 50K
Come and join The Doughnut Dash 50K! At this event you can earn yourself a super fun medal along with some doughnuts at the finish line to celebrate your achievement!
- 50 km trail running
- Sun 22 Feb
- £23-£35
The Wacky Run | 50K
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.
- 50 km road running
- Sat 28 Feb
- £54-£56
Carry on in the Colliery | Ultra Marathon
Take on lapped course through the stunning South Yorkshire Park country park of Rabbit Ings and reach the finish to hang your finisher's medal around your neck with pride.
- 30 miles trail running + 1572 ft ascent
- Sat 28 Feb
- £23-£35
The Giraffe Gallop | 50K
There's another animal inspired event for you, the featured animal this time is a giraffe! The medal, as always, is incredible and definitely one to add to your animal collection!
- 50 km trail running
- Sun 1 Mar
- £22-£35
St Davids Day Dragon Run | 50K
Come and get involved in the second St David's Day 50K Dragon Run in the beautiful Dare Valley Country Park in, of course, Wales!
- 50 km trail running
- Sat 7 Mar
- £23-£35
The Panda Plod | 50K
Here's an animal-inspired 50K ultra for you. The featured animal this time is a panda! The medal, as always, is incredible and definitely one to add to your collection!
- 50 km trail running
- 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
- £23-£35
The Sloth Scamper | 50K
Come and join in The Sloth Scamper 50K where 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?
- 50 km trail running
- Sun 15 Mar
- £24-£38
The Dashing Dog Charity Run | Wales | 50K
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 for your 50K!
- 50 km road running
- Sat 21 Mar
- £23-£35
The Flying Fox | 50K
Come and join The Flying Fox 50K event! Are you as cunning and as quick as a fox and fancy showcasing your running skills?
- 50 km trail running
- Sat 21 Mar
- £22-£34
The Flying Fox | Northampton | 50K
Come and join in for The Flying Fox 50K event! Are you as cunning and as quick as a fox and fancy showcasing your running skills?
- 50 km trail running
- Sun 22 Mar
- £25-£40
The Dashing Dog Charity Run | 50K
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 for your 50K!
- 50 km road running
- Sat 28 Mar
- £49
Way of the Dead 50K
The Way of the Dead (formerly the 'Dartmoor Traverse East to West') returns for the second year, with a 50K Dartmoor Traverse route from east to west.
- 50K ultra run
- Sat 28 Mar
- £23-£35
Milkshake Meander | 50K
"My milkshake brings all the boys to the yard"... not quite sure where we're going with this but come and join this fantasic Milkshake Meander event!
- 50 km trail running
- 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 | 50K
Who doesn't know and love The Fraggles! Come and join in the Fraggle 50K Run and earn a medal based on the adorable little creatures!
- 50 km trail running
- Thu 2 Apr
- £23-£35
Eggcellent Easter Orange Run | 50K
Come and join the day of running and aim to complete 50K at your own pace on a scenic course then receive a fantastic Easter egg themed medal and goody bag at the finish!
- 50 km trail running
- Fri 3 Apr
- £23-£35
Eggcellent Easter Pink Run | 50K
The Eggcellent Easter Pink Run is the second event in the five-day series where you can earn the fantastic easter egg medal in pink!
- 50 km trail running
50K ultra marathon blog
Guides, tips and advice on running a 50K ultra.
- 10 mins read
Race 101: the 13 Valleys Ultra
Introducing the 13 Valleys Ultra plus the event's shorter distance options, helping you to push your limits and get involved!
- 8 mins read
10 best ultra marathons in the UK
Take on an epic endurance challenge with one of the most popular ultra runs in the UK, from traditional fell runs to the UTMB World Series!
50K ultra marathon FAQs
Answers to the most common questions about running a 50K ultra.
A 50K ultra run is a race of approximately 31 miles, making it the shortest and most common ultra-distance event.
Yes — many runners choose a 50K as their first ultra thanks to achievable distances, generous cut-offs and supportive atmospheres.
Many 50K events are trail-based, but some use mixed terrain or looped courses. Check event details for surface and elevation.
50K ultra runs near you
Select your location for 50K ultra marathons in your area.