Make your run count and help support people living with cancer. Macmillan will provide you with all that you need including a free running top, tops tips and plenty of treats on race day

Welcome to the GRIM Series 2014

Welcome to the GRIM Series; events for people who want a dirty adventure.

GRIM events are held on a variety of terrains from Army vehicle training tracks to motocross circuits, so expect the unexpected! GRIM events are designed tough but fun – we know you wouldn’t want it any other way.

We know you want to come out and play, and we’re sure you’ve got what it takes. See you on a start line soon.


Let the filth fun begin!

You've given us some great team names over the years, here's our favourites

Click here for team names