There are
1,252 mi
from Daly City, CA to Thornton, CO
That's the driving distance. It would take 21 hours 30 mins to go from Daly City, California to Thornton, Colorado.
The flight distance (direct flight from Daly City, CA to Thornton, CO) is 952.88 mi.
1,252 mi = 2,015.57 kms