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107 to entrance and 139 to Old Faithful.
Cody is 52 miles from the East Gate of Yellowstone.
1232 km to The Yellowstone Park boundary at the town of West Yellowstone, This is the easiest and most convenient entry to access
How far is Sandpoint Idaho from Boise Idaho?
1008 miles
Colorado River - of Grand Canyon fame. It depends on how you define "major". The Columbia River system of the Pacific Northwest has its headwaters as far east as Yellowstone Park in Wyoming, and is navigable as far inland as Lewiston, Idaho. It definitely flows into the Pacific. Remember, all precipitation which falls west of the continental divide will eventually find its way to the Pacific Ocean.
States in the west include: Alaska Arizona California Colorado Hawaii Idaho Montana Nevada New Mexico Oregon Utah Washington Wyoming
739 miles
2000 miles
About 104 miles on I-84 E
1550 km
around 70 miles.