There are
1,636 mi
from San Angelo, TX to Niagara Falls, NY
That's the driving distance. It would take 1 day 6 hours to go from San Angelo, Texas to Niagara Falls, New York.
The flight distance (direct flight from San Angelo, TX to Niagara Falls, NY) is 1,418.10 mi.
1,636 mi = 1.61 kms