There are
2,037 mi
from Wheaton, IL to Poway, CA
That's the driving distance. It would take 1 day 11 hours to go from Wheaton, Illinois to Poway, California.
The flight distance (direct flight from Wheaton, IL to Poway, CA) is 1,692.56 mi.
2,037 mi = 3,278.42 kms