There are
2,657 mi
from Knoxville, TN to Arcata, CA
That's the driving distance. It would take 1 day 23 hours to go from Knoxville, Tennessee to Arcata, California.
The flight distance (direct flight from Knoxville, TN to Arcata, CA) is 2,181.19 mi.
2,657 mi = 3.22 kms