Beta for the Lost River Range Pasimeroi side

I have a week off coming up and was thinking of climbing Leatherman from the East. I drive a Subaru Forester and dont think it will make it back to the trailhead. si I was thinking of biking in the rest of the way my concerns are... How far of a bike ride would I be looking at and are there any close water sources that I could make use of? I have never been on that side of the range and want to check it out but don't know how feasible of a plan this is.Thanks