Around 15 hours of a non-stop trip, over 1390 kilometers (864 miles) of road.
You could take a flight into Tijuana, Mexicali, La Paz or Los Cabos (the most important cities on the region) or you could drive from the US-Mexico border at San Diego, California into Mexico.
Driving distance is 118 miles (190 kilometers) over a 2-hour drive.
According to Google Maps, it would take 7 hours, 56 minutes to travel from Monterey, CA to Tijuana, Baja California, Mexico.
574 miles
Road distance is 2,509 kilometers (1,559 miles) over a 27-hour, non-stop drive.
20 and 1/2 hours
Road distance is 1,717 miles. You would need a 31-hour drive, or a 6-hour flight to travel the distance between Tijuana and Mexico City.
It really depends on where in Mexico and what transportation mode are you using. If you are planning to drive to Tijuana - bordering San Diego, California - you will have to pass trough Virginia, Tennessee, Arkansas, Texas, New Mexico, Arizona and finally California. If you want to fly to Cancun, you will most probably pass over Florida.
It depends on where in Mexico are you going. Is it Tijuana, bordering San Diego, California? It will take you 19 hours over a non-stop drive. Maybe Cancun? It will take you 62 hours to cover such distances. Remember: Mexico is not a small country but a large territory; proof is the fact that distance between Tijuana and Cancun is equivalent to that between Seattle and Cincinnati, OH!
There are several of them. For example, a road trip between Yreka, California (United States) and Tijuana Mexico takes 11 hours. Another couple of countries within the range would be El Salvador and Honduras.
It would take a 45-hour, non-stop drive. Road distance is 4,369 kilometers (2,715 miles). It is almost the same distance you would drive between San Francisco, California and Washington D.C. Your best option would be to take a flight from Tijuana to Mexico City, then to Cancun, taking 6-8 hours to complete.
depending on where in Mexico and where in California it could be just a few minutes