Click an event for full event details, location, route, sustainability, what's included and how to enter.
One of the most technically difficult Tough Mudder events where all obstacles are scaled-up, with surprises, extra muddy terrain, killer hills and scenic views of Belvoir Castle too.
Three-hour lapped challenge over 3.55 miles from the beautiful town of Masham where you'll come in to a bespoke medal and all things Black Sheep at the finish line.
Back to Ferry Meadows Country Park for another 4-hour running challenge! Run as much as you want through the forest on a multi-terrain loop. Run, rest, then head out for some more.
One of the most technically difficult Tough Mudder events where all obstacles are scaled-up, with surprises, extra muddy terrain, killer hills and scenic views of Belvoir Castle too.
A Festival of Inclusivity with challenge events for all ages, health conditions and abilities. Held in the grounds of the majestic Windsor Great Park and staged on the iconic Long Walk.
Six-hour lapped challenge over 3.55 miles in the beautiful town of Masham where you'll come in to a bespoke medal and all things Black Sheep at the finish line.
It's summer time so come join a loop or two at the lovely Brandon Country Park through the heart of Thetford Forest!
Come and join It's Grim Up North Running at Kirkstall for this brilliant pop up Summer Series. Jumble medal, beer or soft drink and sweetie bag for all runners.
A new and totally unique running challenge where you aim to run 10 x 5K laps which get faster the more you complete. How far can you go?
Enjoy a trip up the Leeds and Liverpool Canal this summer, all along the flat and even towpath. This event is perfect for runners of all abilities.
The Bright Skies 5K race is a thrilling daytime trail race following an undulating yomp through Surrey's rolling hills and the Denbies Estate in the Surrey Hills.
Run 5K on a private estate surrounded by unparalleled scenery making it one of the most picturesque events in the area. Enjoy the journey at your own pace.
Come and join It's Grim Up North Running at Saltaire for this brilliant pop up Summer Series. Jumble medal, beer or soft drink and sweetie bag for all runners.
Come and join It's Grim Up North Running at Marsden for this brilliant pop up Summer Series. Jumble medal, beer or soft drink and sweetie bag for all runners.