How Long Does It Take To Drive Across Wyoming?

Wyoming is known for being one of the bigger states, as far as land mass is concerned. So if you intend to drive from one end to the next, how long would it take? As you might expect, it depends on which route you take.

Drive time is always subjective due to road conditions, traffic, weather, and construction.

Driving north/south on Interstate 25/90, it takes approximately 6 to 7 hours to drive from Cheyenne, Wyoming, to the Montana state line, covering a distance of roughly 400–450 miles. The fastest and most direct route is taking I-25 North through Casper and Buffalo, then continuing toward the Montana border near Sheridan or Ranchester.

It typically takes between 5 and 6 hours to drive from the east side of Wyoming (Nebraska border near Pine Bluffs) to the west side (Utah border near Evanston) via Interstate 80, covering roughly 400–450 miles.

If you want to cross Wyoming by its more scenic older highways, it will take quite a bit longer, but the trip is by far more beautiful.

Driving across most US states takes between 2 and 8 hours, depending on the direction of travel (width vs. height), traffic, and route choice, with the longest stretches commonly over 10 hours in states like Texas and Alaska. Non-stop driving across the entire Lower 48 states generally takes about 113 hours (nearly 5 days), covering over 13,000 miles.

Texas: ~17 hours (longest, often driven east-west).
California: ~10 hours.
Florida: ~12 hours (due to the Panhandle stretch).
Alaska: ~82 hours (longest total, includes non-highway driving).
Arizona: ~7 hours.
New York: ~10 hours (Long Island to Buffalo).
Pennsylvania: ~4.5–7 hours.Iowa: ~5 hours.

Rhode Island is widely recognized as the shortest state to drive across, measuring roughly 37 miles north-to-south and 48 miles east-to-west, making it the smallest state by total area.