There are
502 mi
from Grain Valley, MO to Grapevine, TX
That's the driving distance. It would take 9 hours 40 mins to go from Grain Valley, Missouri to Grapevine, Texas.
The flight distance (direct flight from Grain Valley, MO to Grapevine, TX) is 449.86 mi.
502 mi = 808.48 kms