There are
2,143 mi
from Mt Prospect, IL to Pleasanton, CA
That's the driving distance. It would take 1 day 12 hours to go from Mt Prospect, Illinois to Pleasanton, California.
The flight distance (direct flight from Mt Prospect, IL to Pleasanton, CA) is 1,813.15 mi.
2,143 mi = 3,448.11 kms