Miles between Thornton, CO and Petaluma, CA

There are
1,236 mi
from Thornton, CO to Petaluma, CA

That's the driving distance. It would take 21 hours 16 mins to go from Thornton, Colorado to Petaluma, California.

The flight distance (direct flight from Thornton, CO to Petaluma, CA) is 952.99 mi.

1,236 mi = 1.61 kms