best route, West to East?
Headed to Illinois in July from NorCal and wondering which route would have the least grades to climb the Rockies, I-80 or I-70?
Forum Discussion
In Utah on I-80, you'll encounter Parley's Summit east of Salt Lake City. There are long (6 mile) stretches of 6% grades. Vail Pass on I-70 in Colorado is a bit more severe with stretches of 7 miles of 7% grades.
Rob
Rob
