Colter Bay to Yellowstone Grizzly Park- Steep grades?
We are staying at Colter Bay for a few days but then driving to Yellowstone Grizzly Park. We are towing a 32'TT with a Suburban and would like some advise on which route to take that has the least amount of steep grades. Is going straight through Yellowstone ok? or should we look at going around using route 20?
2016 Rockwood 2702WS
2016 Chevy 2500HD Duramax 4x4 High Country