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Your mission, should you choose to accept it, will not for the feint hearted but will definitely for those wanting fun.


We’ve taken the best (worst) elements of GRIM and incorporated them in to one 3.5 mile loop, which you’ll run twice, in the dark with only your head torch to keep you safe…

Operate outside military protocol and keep your wits about you. During blackout, the woods appear creepy, the sand dune more hair-raising than ever, the water more sapping and the bog will terrify you!

But, there’s safety in numbers.

We also know they’ll be a lot of laughs along the way. You can enteras an individual or why not round up other some other brave souls and enter a team in one of our three categories: women only, men only or mixed teams.

Our official charity partner for GRIM BLACKOUT is Macmillan Cancer Support, helping people live with cancer. We are delighted that they are supporting us and we hope you’ll support them by raising a little sponsorship for your dark effort.

Early Bird Entry £25 before June 1st
Standard Entry £30

All entries subject to £2 entry system fee



We know that for the ultimate Grim warrior out there one event is not enough and we’ve had a few requests from people wishing to compete in both the GRIM Blackout and the GRIM Duathlon earlier in the day! So, for the ultimate nutter, we’d like to offer you guys a tenner off.

Enter both and drop us an email to let us know. We’ll refund your card £10 for you to spend at the asylum