50K ultra runs in the UK
The shortest of the common ultra distances at just over 30 miles, 50K ultra marathons are the best introduction to ultra running. But the distance is not always the key challenge with ultra runs - the total ascent gives a much better indication of how hard it will be. Select your location to find 50K ultra runs in your area or scroll down to browse events coming up.
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50K ultra runs in 2025/2026
Featured events are listed below - select a month/region or the map view to see all events.
- Sat 20 Sep
- £16-£35
Fraggle Run | Wales
Who doesn't know and love The Fraggles! Come and join Saturn Running for the Fraggle Run and earn a medal based on the adorable little creatures!!
- Trail run
- 5K run
- 10K run
- Half marathon
- Marathon
- + 3 more races
- Sat 20 Sep
- £60
Peak District Challenge | Bronze Challenge 50K
Take in the valleys of the dark peak and the scenic trails of the white peak and reach the highest point at 464m, with a 12-hour target time which is generous for runners and a brisk pace for hikers.
- 50 km trail running + 1140 m ascent
- Sun 21 Sep
- £16-£35
Fraggle Run
Who doesn't know and love The Fraggles! Come and join Saturn Running for the Fraggle Run and earn a medal based on the adorable little creatures!!
- Trail run
- 5K run
- 10K run
- Half marathon
- Marathon
- + 3 more races
- Sat 27 Sep
- £16-£35
Romp Run
Anyone know what a group of otters is called? A romp! So this is an event inspired by these adorable little creatures and the medal is super cute too!
- Trail run
- 5K run
- 10K run
- Half marathon
- Marathon
- + 3 more races
- Sat 27 Sep
- £139
Chiltern 50 Ultra Challenge | Full 50km
The full 50K route of the Chiltern 50 Ultra Challenge starts from basecamp in Henley on a loop via Greys Court, the Ridgeway, Shakespeare's Way, The Chilterns and Hambleden Village to a party finish!
- 50 km trail running + 920 m ascent
- Sat 27 Sep
- £26-£28
Runaway Challenge | Ultra Marathon
Welcome to a 6-hour timed running event where you can run an ultra at your own pace on a flat, looped route, with fuel stations each lap, and a medal and goody bag at the finish.
- 32 miles trail running + 301 ft ascent
- Fri 3 Oct
- £20-£27
Midweek Chasing Numbers Oct | 50K
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.
- 50 km trail running + 0 ft ascent
- Sun 5 Oct
- £16-£35
The Autumn Lucky Dip Run
Welcome to a 7-hour running event where you can run your choice of distance up to 7 hours at your own pace on a scenic route, with fuel stations each lap, and a lucky dip medal and goody bag!
- Trail run
- 5K run
- 10K run
- Half marathon
- Marathon
- + 3 more races
- Sat 11 Oct
- £139
Kent Downs 50 Ultra Challenge | 50km
Set in an Area of Outstanding Natural Beauty offering dramatic views, vibrant communities, a rich historic heritage, and diverse wildlife and habitats – featuring the North Downs Way National Trail.
- 50 km trail running + 1000 m ascent
- Sat 11 Oct
- £95-£216
William Wallace 50km Ultra
You will step onto Scotland’s most storied battlefields, where warriors once fought for freedom, embarking on an epic journey through history, treading in the footsteps of legends. Are you ready?
- 50 km multi terrain running + 602 m ascent
- Sun 12 Oct
- £17-£29
Scare Bear Run - North | 50K
Come and join Saturn Running for our spooky Scare Bear Run!
- 50 km road running
- Sat 18 Oct
- £22-£35
Scare Bear Run - Wales | 50K
Come and join Saturn Too for our spooky Scare Bear Run!
- 50 km road running
- Sun 19 Oct
- £49.50
Brenig Way 50K Trail
This regional marked footpath of 32 miles winds it's way through some beautifully remote upland scenery. Start at the town of Corwen in the Dee Valley, and follow the signage up the Dee Valley.
- 50 km trail running + 1450 m ascent
- Sat 25 Oct
- £23-£35
Scare Bear Run | 50K
Come and get involved in this spooky Scare Bear Run!
- 50 km trail running + 0 ft ascent
- Sat 1 Nov
- £35.50-£37.50
Catherine Wheel Canter | Ultra Marathon
Welcome to the Fireworks Festival of Running! Come and tackle the track to see whether you can complete more than a marathon over multiple laps of the 400m circuit.
- 50 km track and field
- Sat 1 Nov
- £22-£34
Reason To Treason Run-Powder Plot | 50K
Welcome to a 6-hour timed running event where you can run 50K within the time limit on a scenic out-and-back route, with fuel stations each lap, and a Guy Fawkes medal and goody bag at the finish.
- 50 km trail running + 198 ft ascent
- Sat 1 Nov
- £35.50-£37.50
Guy Fawkes Gallop | Ultra Marathon
Welcome to the Fireworks Festival of Running! Come and tackle the track to see whether you can complete more than a marathon over multiple laps of the 400m circuit.
- 50 km track and field
- Sun 2 Nov
- £53-£55
Old Mother Shipton's Soft Shoe Shuffle | Ultra Marathon
A trail running extravaganza over a beautiful 6.5-mile route from Knaresborough centre through parkland then into beautiful countryside with an awesome medal at the finish line.
- 32.5 miles trail running + 1790 ft ascent
- Sat 8 Nov
- £26-£28
Remembrance Run | Ultra Marathon
Welcome to a 6-hour timed running event where you can run an ultra marathon at your own pace on a flat, out-and-back route, with fuel stations each lap, and a medal and goody bag at the finish.
- 32 miles trail running
- Sun 9 Nov
- £24-£38
Remembrance Day Run | South
Your chance to remember those who have given the ultimate sacrifice during conflicts around the world, with a two-minute silence and a run of your choice from 3K to ultra.
- Trail run
- 5K run
- 10K run
- Half marathon
- Marathon
- + 3 more races
- Sun 9 Nov
- £16-£36
Remembrance Day Run | North East
Your chance to remember those who have given the ultimate sacrifice during conflicts around the world, with a two-minute silence and a run of your choice from 3K to ultra.
- Trail run
- 5K run
- 10K run
- Half marathon
- Marathon
- + 3 more races
- Fri 14 Nov
- £20-£27
Midweek Chasing Numbers Nov | 50K
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.
- 50 km trail running + 0 ft ascent
- Sun 16 Nov
- £23-£35
Smurf Run | 50K
Come and join this Smurf Run, who doesn't love those little blue characters and therefore a medal reflecting how adorable they are!
- 50 km trail running + 0 ft ascent
- Sat 22 Nov
- £22-£35
Smurf Run - Wales | 50K
Come and join this Smurf Run at the picturesque Dare Valley in Wales! Who doesn't love those little blue characters and therefore a medal reflecting how adorable they are!
- 50 km trail running + 0 ft ascent
- Sun 23 Nov
- £23-£35
Lord of The Run Part 3 | 50K
Get involved in this Lord of the Run Part 3 (LOTR) style run. Whether you love or hate it, come join in anyway by going on an Adventure across the Thames!
- 50 km road running + 0 ft ascent
- Sat 29 Nov
- £26-£28
Rhino Run | 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
- Fri 5 Dec
- £20-£27
The Christmas Jumper Jaunt | 50K
Join in midweek run and as it's nearly Christmas this midweek event is The Christmas Jumper Jaunt - the wearing of your most over the top Christmas jumper is encouraged but not mandatory!
- 50 km trail running + 0 ft ascent
- Sat 6 Dec
- £28-£40
A Christmas Carol Bobble Hat Run | 50K
Come and join in Christmas Carol Bobble Hat Run, at this event you can earn yourself a bobble hat as well as one of the incredible themed medals!!
- 50 km trail running + 0 ft ascent
- Sun 14 Dec
- £22-£34
A Christmas Carol Bobble Hat Run - North | 50K
Come and join in Christmas Carol Bobble Hat Run, at this event you can earn yourself a bobble hat as well as one of the incredible themed medals!!
- 50 km trail running
- Sun 21 Dec
- £27-£40
A Christmas Carol Bobble Hat Run - Wales | 50K
Come and join in Christmas Carol Bobble Hat Run in the picturesque Dare Valley in Wales! At this event you can earn yourself a bobble hat as well as one of the incredible themed medals!!
- 50 km trail running
- Thu 25 Dec
- £23-£35
Christmas Day Cracker Run | 50K
After the success of the last 4 years of The Christmas Day Cracker Run, join the fifth Christmas Day run!
- 50 km trail running + 0 ft ascent
- Fri 26 Dec
- £28-£30
Boxing Day Challenge | Ultra Marathon
Come and join the day of running and aim to complete an ultra 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!
- 32 miles trail running + 0 ft ascent
- Sat 27 Dec
- £23-£35
Year End Time Turner | 50K
Join the final event in 2025 and see the year out with a bang! You can choose the medal you want from a selection from throughout the year!
- 50 km trail running + 0 ft ascent
- Thu 1 Jan 2026
- £23-£35
New Years Day Run | 50K
Yay it's 2026 and what better way to celebrate than running your first 5k/marathon/50k etc!!!
- 50 km trail running + 0 ft ascent
- Fri 9 Jan 2026
- £20-£27
Midweek Chasing Numbers Jan | 50K
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.
- 50 km trail running + 0 ft ascent
- Sat 10 Jan 2026
- £23-£35
The Rise From The Ashes Run - South | 50K
Come and get involved in this Rise From The Ashes Run at The Last Hop in Staines, as long as you complete at least 3km you will be rewarded with one of the incredible phoenix medals!
- 50 km trail running + 0 ft ascent
- Sun 18 Jan 2026
- £17-£27
The Rise From The Ashes Run - North | 50K
Come and get involved in this Rise From The Ashes Run in Durham, as long as you complete at least 5km you will be rewarded with one of the incredible phoenix medals!
- 50 km trail running
- Sat 24 Jan 2026
- £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 + 0 ft ascent
- Sat 24 Jan 2026
- £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!
- 50 km trail running + 338 ft ascent
- Fri 6 Feb 2026
- £20-£27
Midweek Chasing Numbers Feb | 50K
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.
- 50 km trail running + 0 ft ascent
- Sat 7 Feb 2026
- £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 + 0 ft ascent
- Sat 14 Feb 2026
- £23-£35
The Racoon Rocket Run | 50K
Come and join in The Racoon Rocket Run and earn yourself a beautiful medal with an adorable picture of a fluffy racoon on! What more could you ask for??
- 50 km trail running + 0 ft ascent
- Sun 15 Feb 2026
- £17-£27
Smurf Run - North | 50K
Come and join in Smurf Run, who doesn't love those little blue characters and therefore a medal reflecting how adorable they are!
- 50 km trail running
- Sat 21 Feb 2026
- £23-£35
The Rubber Ducky Dash | 50K
Due to the success of the Rebellious Rubber Ducky Run in 2025 Saturn Running is holding it's second event inspired by the adorable bath toys!
- 50 km trail running + 0 ft ascent
- Sat 28 Feb 2026
- £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 2026
- £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 + 0 ft ascent
- Sun 1 Mar 2026
- £22-£35
St Davids Day Dragon Run | 50K
Come and get involved in the second St David's Day Dragon Run in the beautiful Dare Valley Country Park in, of course, Wales!
- 50 km trail running
- Fri 6 Mar 2026
- £20-£27
Midweek Chasing Numbers Mar | 50K
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.
- 50 km trail running + 0 ft ascent
- Sat 7 Mar 2026
- £23-£35
The Panda Plod | 50K
There'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 animal collection!
- 50 km trail running + 0 ft ascent
- Sat 14 Mar 2026
- £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 + 59 ft ascent
- Sat 14 Mar 2026
- £23-£35
The Sloth Scamper | 50K
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?
- 50 km trail running + 0 ft ascent
- Sat 21 Mar 2026
- £23-£35
The Flying Fox | 50K
Come and join The Flying Fox event, are you as cunning and as quick as a fox and fancy showcasing your running skills with us?
- 50 km trail running + 0 ft ascent
- Sat 28 Mar 2026
- £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.
- Trail run
- 50K ultra run
- Sat 28 Mar 2026
- £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 Saturn Running for our Milkshake Meander event!
- 50 km trail running + 0 ft ascent
- Sun 29 Mar 2026
- £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 2026
- £17-£29
Fraggle Run - North | 50K
Who doesn't know and love The Fraggles! Come and join in the Fraggle Run and earn a medal based on the adorable little creatures!!
- 50 km trail running
- Thu 2 Apr 2026
- £23-£35
Eggcellent Easter Orange Run | 50K
The Eggcellent Easter Orange Run is the first event in the five day series where you can earn the fantastic easter egg medal in orange!
- 50 km trail running + 0 ft ascent
- Fri 3 Apr 2026
- £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, this time in pink!
- 50 km trail running + 0 ft ascent
- Sat 4 Apr 2026
- £23-£35
Eggcellent Easter Green Run | 50K
The Eggcellent Easter Green Run is the third event in the five day series where you can earn the fantastic easter egg medal, this time in green!
- 50 km trail running + 0 ft ascent
- Sun 5 Apr 2026
- £23-£35
Eggcellent Easter Purple Run | 50K
The Eggcellent Easter Purple Run is the fourth event in the five day series where you can earn the fantastic easter egg medal, this time in purple!
- 50 km trail running + 0 ft ascent
50K ultra runs near you
Select your location for 50K ultra marathons in your area.