There are
2,465 mi
from Redwood City, CA to Athens, TN
That's the driving distance. It would take 1 day 19 hours to go from Redwood City, California to Athens, Tennessee.
The flight distance (direct flight from Redwood City, CA to Athens, TN) is 2,082.56 mi.
2,465 mi = 3,966.86 kms