Miles between Thornton, CO and South San Francisco, CA

There are
1,252 mi
from Thornton, CO to South San Francisco, CA

That's the driving distance. It would take 21 hours 31 mins to go from Thornton, Colorado to South San Francisco, California.

The flight distance (direct flight from Thornton, CO to South San Francisco, CA) is 950.17 mi.

1,252 mi = 1.61 kms