wtmtnhiker
May 01, 2021Explorer
Billings Montana to Yellowstone
I'll be driving from Billings, Mt to Grizzly Rv park in West Yellowstone. Looks like the most direct Route is I-90 to U.S.191. Does anyone have firsthand knowledge of 191? Is it a decent road to drive an RV to Grizzly? Any formidable grades up or down? Thanks.