Get outside with the California Camping Company, they’ve reserved a hard-to-get holiday weekend campsite inside Pinnacles National Park, just 2.5 hours from SF. The 3-day weekend makes it easier to explore the park’s 30 miles of trails, which pass through 2 giant caves and across the beautiful mountain-top rock pinnacles the park is named for. This park is perfect for a January trip as it's too hot in the summer.
They take care of almost everything. Just show up, hike, grab a drink, and camp.
If you need gear, you know who to call!