It's not a very long distance. Our son lives in Venice, and it takes us about 10 minutes to get there from LAX. Santa Monica is just north of Venice, so it would be 15 - 20 minutes from LAX, depending on traffic. We take Lincoln Blvd. from LAX, and it takes you straight through Marina Del Ray, then Venice, then Santa Monica.
The driving distance from Los Angeles International Airport to Santa Monica is 14 miles.
About 160 miles and 3 to 5 hours driving time.
The driving distance from LAX to SMO is 11 miles.
The driving distance from SAN to LAX is about 127 road miles.
The driving distance from LAX to Anaheim, CA is 34 miles.
The driving distance from LAX to Las Vegas is 287 miles.
The total driving distance from LAX to Malibu, CA is 32 miles.
The driving distance from Flagstaff, AZ to LAX is 481 miles
The driving distance from Carmel, CA to LAX is 327 miles.
The driving distance from LAX to Reno, NV is 524 miles.
The driving distance from LAX to Corona, CA is 55 miles.
The driving distance from LAX to Riverside, CA is 67 miles.