There are
2,458 mi
from Knoxville, TN to San Ramon, CA
That's the driving distance. It would take 1 day 19 hours to go from Knoxville, Tennessee to San Ramon, California.
The flight distance (direct flight from Knoxville, TN to San Ramon, CA) is 2,092.84 mi.
2,458 mi = 3.22 kms