Miles between Longmont, CO and San Juan, TX

There are
1,193 mi
from Longmont, CO to San Juan, TX

That's the driving distance. It would take 21 hours 34 mins to go from Longmont, Colorado to San Juan, Texas.

The flight distance (direct flight from Longmont, CO to San Juan, TX) is 1,045.10 mi.

1,193 mi = 1.61 kms