There are
725 mi
from Concord, CA to Holladay, UT
That's the driving distance. It would take 12 hours 30 mins to go from Concord, California to Holladay, Utah.
The flight distance (direct flight from Concord, CA to Holladay, UT) is 575.90 mi.
725 mi = 1,166.21 kms