There are
1,965 mi
from San Clemente, CA to Peoria, IL
That's the driving distance. It would take 1 day 10 hours to go from San Clemente, California to Peoria, Illinois.
The flight distance (direct flight from San Clemente, CA to Peoria, IL) is 1,616.54 mi.
1,965 mi = 3,162.63 kms