San Diego has more than enough beaches, attractions, restaurants and neighborhoods to fill an entire vacation. But one of the best things about visiting this part of Southern California is how much more there is to discover once you get behind the wheel.
Within a couple of hours of downtown San Diego, you can swap the coastline for mountain scenery, explore a historic gold-mining town, head into the desert or spend the day discovering another laid-back California beach community. San Diego’s geography makes it particularly well suited to road trips, with mountains and desert landscapes accessible in less than two hours.
If you have a rental car and a free day, here are seven destinations worth adding to your itinerary.
1. Julian – Apple Pie and Mountain-Town Charm
About 60–75 minutes from San Diego, Julian feels a world away from the coast.
This historic mountain town is known for its gold-mining heritage, apple orchards and, of course, apple pie. September is an especially good time to start thinking about a Julian road trip as the area heads into its famous fall apple season. Visitors can wander through the town, browse local shops, explore the surrounding countryside and stop for something sweet before heading back to San Diego.
Why it’s better with a rental car: You can travel at your own pace, stop at viewpoints along the way and combine Julian with other destinations in San Diego’s backcountry.
2. Mount Laguna – Trade Palm Trees for Pines
Want to see a completely different side of San Diego County? Head east to Mt Laguna.
The drive into the Laguna Mountains takes you away from the urban coastline and into forests, mountain scenery and hiking country. The Sunrise Highway is particularly scenic, climbing through pine and oak landscapes at elevations of around 5,000–6,000 feet, with access to viewpoints and hiking trails along the way.
Pack some snacks, comfortable shoes and your camera. The journey is part of the experience.
Why it’s better with a rental car: This is exactly the kind of trip where having your own vehicle pays off. Stop when a view catches your eye, explore a trail or simply enjoy the drive.
3. Anza-Borrego Desert State Park – Discover the Desert
For a road trip that feels like an adventure, point the car towards Anza-Borrego Desert State Park.
The landscape changes dramatically as you leave San Diego behind. Anza-Borrego spans more than 580,000 acres of Colorado Desert and is known for its rugged desert scenery, unique plants, wildlife and vast open spaces.
September can still bring very hot desert conditions, so check the weather before setting off, carry plenty of water and plan outdoor activities accordingly.
Why it’s better with a rental car: The freedom to explore scenic roads and viewpoints is a huge part of the Anza-Borrego experience.
4. Oceanside – A Classic Southern California Beach Day
If your perfect day trip involves sunshine, ocean air and an easygoing atmosphere, drive north to Oceanside Harbor.
Oceanside delivers that classic Southern California beach-town feeling, with its beach, harbor and coastal atmosphere. The San Diego Tourism Authority also highlights Oceanside Pier, Oceanside Harbor, the California Surf Museum and Mission San Luis Rey among the area’s attractions.
Spend the morning exploring, stop somewhere for lunch and stay long enough to enjoy the late-afternoon coastal atmosphere.
Why it’s better with a rental car: You’re not tied to a timetable. If you spot another beach or coastal town you want to explore on the way, simply pull in.
5. Carlsbad – Coast, Shopping and California Lifestyle
Just south of Oceanside is Carlsbad Village, making it another easy day trip from San Diego.
Carlsbad is around 45 minutes north of San Diego and offers seven miles of coastline alongside shopping, restaurants and plenty of quintessential Southern California atmosphere.
You could also turn this into a mini North County road trip by visiting Carlsbad and Oceanside on the same day.
Why it’s better with a rental car: You can create your own coastal itinerary instead of limiting yourself to a single destination.
6. Temecula – A Change of Scenery
Head north and inland and you’ll find the Temecula area, roughly an hour from San Diego under normal traffic conditions.
Start with a stroll through Old Town Temecula, where the historic surroundings offer a very different atmosphere from downtown San Diego.
Temecula is also widely known for its wine country. If wine tasting is part of your itinerary, however, plan ahead and make sure you have a designated driver or arrange appropriate transportation rather than driving afterwards.
Why it’s better with a rental car: Temecula gives you an opportunity to explore beyond San Diego County and see another side of Southern California at your own pace.
7. Coronado – An Easy Escape Close to the City
You don’t have to drive for hours to turn a free day into an adventure.
Coronado Beach offers a beautiful coastal escape close to central San Diego. Coronado is one of the distinctive communities highlighted by California’s official tourism resources as part of the wider San Diego experience.
Spend the day enjoying the beach, exploring the area and taking in the views before heading back across the bay.
Why it’s better with a rental car: It can form part of a bigger day’s itinerary. Start in Coronado, explore elsewhere in San Diego and finish the day wherever the sunset takes you.
The Best San Diego Trips Aren’t Always Planned
That’s the real advantage of having your own rental car.
You don’t have to decide between the beach, mountains, desert or another town before your trip even begins. You have the freedom to change your plans, stay somewhere a little longer or take the scenic route simply because it looks interesting.
In fact, San Diego’s official tourism organization promotes a one-day “Cactus-to-Coast” route that moves through rural communities, mountain landscapes and desert vistas before returning toward the Pacific — a great example of just how much variety you can experience by car.
Ready to Explore More of San Diego?
At Express Rent a Cheap Car San Diego, we believe more of your vacation budget should go towards the experiences you’ll remember, not simply getting from A to B.
Whether you’re heading to the coast, mountains or somewhere completely unexpected, an affordable rental car gives you the freedom to experience San Diego your way, on your schedule.
Pick up the keys. Choose a direction. And see where the road takes you.
