There are
1,671 mi
from Boise, ID to Seguin, TX
That's the driving distance. It would take 1 day 6 hours to go from Boise, Idaho to Seguin, Texas.
The flight distance (direct flight from Boise, ID to Seguin, TX) is 1,397.32 mi.
1,671 mi = 2,689.71 kms