How would you incorporate a competition into a "Last Man Up" run?

When it comes to true last man up runs I try to separate the platoon into two ranks so that each time your racing some one to the front. I make sure people are paired up against equally fast runners. If the formation isn't big enough for two ranks, 100 meter relays might be better. You can incorporate different exercises in between the sprints as suggested above. In the past I've had PSG's that used circuit work outs for time that had 400 meter sprints as a part of the exercises. The first person done usually got an incentive like a late work call or an early release as an added bonus if the mission could support it.

Add pushups before someone takes the lead. Carry a medicine ball and pass it throughout the run.