Miles between Boise, ID and Portsmouth, NH

There are
2,725 mi
from Boise, ID to Portsmouth, NH

That's the driving distance. It would take 2 days to go from Boise, Idaho to Portsmouth, New Hampshire.

The flight distance (direct flight from Boise, ID to Portsmouth, NH) is 2,256.26 mi.

2,725 mi = 3.22 kms