Miles between Longmont, CO and San Diego, CA

There are
1,103 mi
from Longmont, CO to San Diego, CA

That's the driving distance. It would take 19 hours 28 mins to go from Longmont, Colorado to San Diego, California.

The flight distance (direct flight from Longmont, CO to San Diego, CA) is 843.69 mi.

1,103 mi = 1.61 kms