There are
1,017 mi
from Longmont, CO to Tehachapi, CA
That's the driving distance. It would take 17 hours 55 mins to go from Longmont, Colorado to Tehachapi, California.
The flight distance (direct flight from Longmont, CO to Tehachapi, CA) is 807.64 mi.
1,017 mi = 1.61 kms