Miles between Boise, ID and St George, UT

There are
642 mi
from Boise, ID to St George, UT

That's the driving distance. It would take 10 hours 32 mins to go from Boise, Idaho to St George, Utah.

The flight distance (direct flight from Boise, ID to St George, UT) is 471.58 mi.

642 mi = 1,032.41 kms