Replying to Midwest to out west: where to.

alright soo im from the midwest which mean yes im a park rat.im in minnesota and my brother is in nd. and he gave me a call today asking if i wanted to go out there sometime. so my quetion is where is the closest place.(shortest distance) to out west with a nice park and some nice back country.(of course nice back country to me is like a foot of powder) hows jackson hole? also any simular distance to colorado? let me kno