There are
1,387 mi
from Nampa, ID to Gladstone, MO
That's the driving distance. It would take 23 hours 19 mins to go from Nampa, Idaho to Gladstone, Missouri.
The flight distance (direct flight from Nampa, ID to Gladstone, MO) is 1,175.94 mi.
1,387 mi = 2,232.69 kms