There are
1,911 mi
from Thornton, CO to Sarasota, FL
That's the driving distance. It would take 1 day 10 hours to go from Thornton, Colorado to Sarasota, Florida.
The flight distance (direct flight from Thornton, CO to Sarasota, FL) is 1,547.71 mi.
1,911 mi = 1.61 kms