[Jay.]

Personally i was never a huge fan of running but i made a goal 2.5 months ago to run a marathon in under 4 hours (doing blackpool marathon april 28th) mostly for a goal that gets me out of my comfort level and because it's something i want to do before i die so there's no better time than now.

But since doing that i've become pretty obsessed with my 4mile and 3mile times since a lot of the short runs are always these distances.

I think even though you hate long distance running you'd very much enjoy a 5km time goal. It's just extremely competitive against yourself to push yourself over and over again, to fight with your mental toughness and to push through pain. This could be one of the bets. Then add a food restriction bet w/ some kind of point scale and then a lifting bet.