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.
Featured events are listed below - select your region to see all events.
Starting alongside those taking on the full route, runners and walkers alike will feel the buzz of the startline before running past all four of the route's ruined abbeys to finish at Jedburgh.
A stunning ultra trail race taking in the South West Coast Path on a fully-marked route with chip timing and medals for all plus an uplifting festival vibe!
Enjoy a flat trail run from the coast at Hornsea in East Yorkshire on an out-and-back route along the scenic Trans Pennine Trail with lots of treats for all finishers.
The South Downs National Park is a superb backdrop for a real charity challenge featuring Beachy Head, the Seven Sisters and the South Downs Way with a choice of distances from 25km right up to 100km!
England’s greatest river provides a fantastic backdrop for an unforgettable 'festival' charity challenge weekend, with distances from 10km right up to 100km there’s a Thames Challenge for everyone!
Scenic mixed-terrain route around Bewl Water on undulating rural wooded trails and quiet country lanes. The marathon course was previously rated one of the top UK marathons.
Take part in the Marsden Madness run for a change of scenery. Challenge yourself to a hilly trail run in the heart of West Yorkshire. Embrace the challenging scenic routes and really earn your medal.
An end-of-season looped charity challenge in some of the Chilterns' finest countryside, with historic trails, rolling hills, nature reserves and fantastic views with routes from 10km up to 50km.
Enjoy a trip up the Leeds and Liverpool Canal this autumn, all along the flat and even towpath. This event is perfect for runners of all abilities.
An end-of-season charity challenge in the Garden of England with a looped route around the Kent Downs starting on the North Downs Way with picturesque scenery and full support all the way.
On foot from the very top of the Lake District to the very bottom via the stunning Helvellyn Ridge and the western shoreline of Lake Windermere. Not easy but certainly spectacular!
An ultra run to the south coast with top reviews, amazing scenery, wonderful trails, forest and paths before reaching the stunning seafront finish line for your ice cream and medal!
A Halloween-themed running event 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.
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.
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.
A trail running extravaganza over a beautiful lapped 6.5-mile course from Knaresborough centre through parkland then into beautiful countryside with an awesome medal at the finish line.
Multi terrain trail running through the glorious trails surrounding Kirkstall Abbey in Leeds including the beautiful River Aire and Bramley Fall Park for runners of all stripes with a bespoke medal.
This event is a huge favourite among the trail running community selling with lovely scenery, challenging hills and a little bit of mud it encompasses everything trail.
A trail ultra that is flat and fast and perfect for a PB and also brilliant for a first-timer or the runner who wants to do their own pace plus bespoke medal and finish line treats.
A trail ultra that is flat and fast and perfect for a PB and also brilliant for a first-timer or the runner who wants to do their own pace plus bespoke medal and finish line treats.
Six pretty 5-mile loops through a lovely country park (a former colliery) on good paths with challenging hills to earn your bespoke medal and finish line treats.
Take on a 6-lap 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.
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.
Fast, flat, PB-grabbing event on good trail and canal towpath with a bespoke medal and treats at the finish line.
Enjoy a trip up the Leeds and Liverpool Canal this spring over a range of distances, all along the flat and even towpath. This event is perfect for runners of all abilities.
This trail running extravaganza funnels participants through a beautiful multi-lap route. Make sure to collect your awesome finishers medal too.
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.
Walk, jog or run the stunning coastal paths of the Isle of Wight for a great charity cause, from the base camp at Chale, visiting historic Cowes and the iconic Needles en route.
An ultra run to the south coast with top reviews, amazing scenery, wonderful trails and rolling downs before reaching the promenade finish line for your ice cream and medal!
The circular 35 mile ultra is a registered UTMB index race with 20.2 miles of cross country trails and 14.3 miles on road through wonderful countryside. Fully tracked and interactive
Walk, jog or run along the fabulous UNESCO World Heritage coastline for charity, starting at the picturesque Corfe Castle, with a range of distances to suit all abilities and full support too.
The ultra is graded ‘very hard’ and one to get into your ultra running calendar if you’re looking for UTMB index runs where you can bag points. Includes Full Weekend Festival Ticket in the price!
Walk, jog or run along the capital to coast route for charity, with a range of distance options available and superb support all the way, for all abilities and experience levels.
Can you survive Farmmageddon? Run an ultra over a fantastic 5.3K loop through the lovely grounds of Hyde Hall Farm as part of the Farmmageddon endurance weekend.
Take on England’s finest countryside for charity, at your own pace, with stunning views en-route. With distances from 10km right up to 100km there’s a Lake District Challenge for everyone!
Test yourself for charity in the rolling hills of the Cotswolds featuring the Cotswold Way, trails and fabulous views, with routes from 10km right up to 100km there’s something for everyone!
A coastal trail ultra through the ancient village of Bosham towards Chichester Harbour with panoramic views of this AONB, to finish at the fantastic basecamp with food and bars.
Head through the historic town of Arundel and witness the impressive Arundel Castle as you meander along the River Arun, across the South Downs in breathtaking surroundings.
From the idyllic basecamp hub in Bakewell, charity challengers will head into the fabulous Peak District National Park on a route from 10 miles right up to the full 100km with full support!
Take on the first half of the UK's favourite ultramarathon and wander through woodland before coming down into the renowned ‘field of dreams’, to finish at the fantastic basecamp with food and bars.
The original Snowdonia Ultra Marathon. A beautiful route boasting stunning views, a hearty ascent of Yr Wyddfa (Snowdon) and a thrilling 7km descent to a heroes' welcome at the finish line!
Starting from Basecamp, race 50K to complete the second day of Race to the Stones through the North Wessex Downs to the finish line at the incredible Avebury Stone Circle.
Select your location for 50K ultra marathons in your area.