There are
2,157 mi
from Champaign, IL to Half Moon Bay, CA
That's the driving distance. It would take 1 day 13 hours to go from Champaign, Illinois to Half Moon Bay, California.
The flight distance (direct flight from Champaign, IL to Half Moon Bay, CA) is 1,838.79 mi.
2,157 mi = 3.22 kms