Routes to Grand Teton NP Colter Bay from Las Vegas
We will be taking a trip to Grand Teton NP Colter Bay (then Grizzly RV Park) coming up from the south through Las Vegas. What is the best route to Colter Bay. I15 through Idaho Falls or I80 to 16 to 30 to 89? or ?? We have a 32'TT towing it with a Suburban 1500 so steep grades are not our friend.
2016 Rockwood 2702WS
2016 Chevy 2500HD Duramax 4x4 High Country