There are
2,511 mi
from Mentor, OH to Lompoc, CA
That's the driving distance. It would take 1 day 20 hours to go from Mentor, Ohio to Lompoc, California.
The flight distance (direct flight from Mentor, OH to Lompoc, CA) is 2,160.65 mi.
2,511 mi = 4,041.25 kms