There are
1,880 mi
from Boise, ID to Seymour, IN
That's the driving distance. It would take 1 day 8 hours to go from Boise, Idaho to Seymour, Indiana.
The flight distance (direct flight from Boise, ID to Seymour, IN) is 1,598.70 mi.
1,880 mi = 1.61 kms