Your total trip with all stops is around 1,500 miles / 2410 km, taking roughly 22 hours for the whole trip. If you want to see every small town along the way, you can get a full list of cities between HOU and SAN.
Start from William P. Hobby Airport.
San Antonio, Texas is stopping point #1 after driving about 210 miles (340 km) or 3.5 hours.
Socorro, Texas is stopping point #2 after driving about 540 miles (870 km) or 7.5 hours. Your total trip so far is about 750 miles or 1210 km over roughly 10.5 hours of driving.
Tucson, Arizona is stopping point #3 after driving about 330 miles (540 km) or 5 hours. Your total trip so far is about 1,090 miles or 1750 km over roughly 15.5 hours of driving.
Finally, San Diego International Airport is your destination after driving about 410 miles (660 km) or 6 hours. Your total trip with all stops is around 1,500 miles or 2410 km, taking roughly 22 hours for the whole trip.
Travelmath helps you figure out where to stop when planning a long road trip from one location to another. The best stopping point for an overnight hotel stay or a break from driving often depends on how far or how long you want to drive before pausing to rest. You can find the closest city to your stopping point to look for hotels, or explore other cities and towns along the route. Use this as a road trip planner when you're driving cross-country or mapping a route with multiple stops.