There are
1,687 mi
from Temecula, CA to Spencer, IA
That's the driving distance. It would take 1 day 6 hours to go from Temecula, California to Spencer, Iowa.
The flight distance (direct flight from Temecula, CA to Spencer, IA) is 1,360.50 mi.
1,687 mi = 2,714.33 kms