Halloween runs to get your heart racing

GRIM Blackout, 7 mile, £30, Aldershot, Hampshire

31 October

This is a mission that’s not for the faint-hearted, but for those who choose to take on the challenge, it’s guaranteed to be a lot of fun. Held on army vehicle training tracks, GRIM Blackout is a 7 mile course set out as two 3.5 mile loops. Get ready for a scare, as when you step out into the dark you’ll need to keep your wits about you while you navigate the creepy woodlands, hair-raising hills and waist-high water by the light of your head torch. Don’t fancy going it alone? Why not round up some other brave souls and enter as a team in one of three categories: women only, men only or mixed.