Per my rating system, this is very close to being 5 stars, meaning it's worth planning a trip from out of state just to visit this park and surrounding national/state forest for 3 days or more The only reason it's 4 stars instead of 5 is that Pinnacles isn't quite big enough to explore exclusively for a minimum of 3 days. You've got a solid and long day of hiking through the park (6 miles, but very intense and exposed). Then a half day of exploring the parts of the park you didn't get to on the hike And then. . well, by then you've probably seen most of what is worth seeing in the park. So hop in the car and drive to Monterey. Go to the aquarium, eat some seafood, and then drive back to Pinnacles (about 3 hours round trip, but worth it if you spend the whole day in Monterey). This is the definition of 4 stars by my system: a park definitely worth visiting if its part of a larger trip to a region. And for locals, this is a must-visit spot, a place that will be on the regular camping rotation.
The park, which is located in a tight valley in San Benito county, is a geologically unique spot nestled in oak studded rolling California coastal mountains. There are two entrances into the park, but the campground is only accessible from the Gilroy/Hollister side. If you're coming from the Bay Area, take Hwy 101 through Gilroy and then get on Hwy 25 South. As you wind your way on Hwy 25, you pass ranch land and within 10 miles of getting off the freeway, you feel like you're pretty far away from it all. That's the thing about California. Get off the main thoroughfares and out of the population centers, and things get rugged fast. In the days of trillion-dollar market caps for Silicon Valley technology companies, people often forget that California has a rich agricultural history. I've lived in California for going on 3 decades, and I sometimes wonder what the more quintessentially central California experience is: Shopping at the Apple Store in San Francisco and then dining at a fine restaurant as the fog rolls in, or buying produce from a farm stand in a valley bordered by rolling hills. It's probably both. San Benito county is a great place to experience the latter.
What makes Pinnacles geologically unique is that the park is formed from bulbous rock formations. These are somewhat reminiscent of what one would find in southern Utah, at a place like Arches. The main hike, which is a loop that begins and ends at the parking lot, takes you up the ridge line and then across the rock faces. It's an intense and fun hike. It's just under 6 miles, but it will take the entire day. Pack a lunch and plenty of water. There are no water sources on the trail. If you're lucky, you'll see condors floating in the thermal currents.
Speaking of thermal currents, Pinnacles is extremely hot in the summer. I've never come here past April. The winter is ideal for Pinnacles. But if you are in the Bay Area in the summer, it's worth checking out. But be prepared for heat.
There are two campgrounds loops: one is for RV's and the other is for tents and RV "dry camping" (i.e. no hookups). I was in the tent section, dry camping my Airstream. The RV loop is easy to get in and out of. The loop I was in was a bit trickier - "blue square" difficulty level for a 28' trailer. I had a back-in spot, but the angle of the spot made it easy to back in. The tricky part was that it was kind of narrow, with railroad ties on either side. It was a good spot, and I'd definitely take that one again. But, if you want full hookups on the RV loop, spots 50 and 51 are the ones to get. Many of the spots on the RV loop were really exposed, and it can get hot in Pinnacles, even in the winter during the day.
As I mentioned in the introduction of this post, there is a lot to do within a 2-3 hour (round trip) drive of Pinnacles. You could go up to the southern Bay Area. You can go to Monterey. You could go wine tasting in Paso Robles. This is a great place to plan a 3-4 night trip. It's always on my short list of places to go.
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