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Tough Mudder 12 Hours Through the Night

Belvoir Castle, Grantham, Lincolnshire
Sorry, bookings for this event have been paused due to a certain virus. Visit our blog post for more details.

Organiser's Description

Toughest Mudder is pushing it to the max again in 2020, with a full 12 hours of overnight action - extreme teamwork, stamina, and mental grit testing action from 8pm Saturday to 8am Sunday. Bust through as many 5 mile laps as you can, crushing 20 of the most incredible obstacles ever seen. Toughest Mudder is guaranteed to push you past anything you’ve ever experienced.

We'll be taking the thick mud, freezing water, and wild terrain that Mudders tackle every year and upping the ante. Expect 5 miles of Tough Mudder gone wild, in the dark, pushing your body and mind to the absolute limit. How many laps can you complete?

Start Time



5 mile laps

More Info

Event website

Conquering 12 overnight hours is one hell of an achievement, and deserves some serious swag. Participants receive:

A race bib

Finisher t-shirt


Finisher medal and mileage patch

Top 3 Male, Female or Relay Teams snag a badass bronze, silver or gold Champion Medal.

Belvoir Castle, Grantham, Leicestershire NG32 1PE

The venue is just a 10 minute drive from the A52, 15 minutes from both Grantham and Melton Mowbray, 40 minutes from Nottingham, and very close to the A1.

You can also access the venue from the the A607 Leicester to Grantham road, from where it is well sign posted; follow the brown and white tourism signs.

Parking is available at the venue. Charges will apply.

12 Hours, Non-Stop Race.

Have all the time and space you need to get focused, with early load-in and an exclusive Toughest pit area, separate from the daytime Mudder Village Festival.

With more hours out on the course, a new, dedicated overnight Event Village is in order. Exclusive access and an early load-in to a brand new Toughest Mudder Village will be given to all athletes. Take advantage of a World's Toughest-style Pit Area, camping and hospitality to ensure you are ready for 12-hours of muddy mayhem.

Stay fully locked and loaded for the full 12 hours, with overnight announcers, fire pits, phone charging stations, killer tunes going all night, shoe drying stations, and more.


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Write a review and you’ll be entered into a monthly draw to win a pair of running shoes of your choice from Pro:Direct Running.

Great Fun

Easy to park for event, ran smoothly and fantastic obstacles.

Communication was extensive prior to event however basics like - remember ID and bag for bag drop etc on last email would have been useful!

Josie Hough / May 20, 2019

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