Daniel B.
Yelp
We visited Armstrong Redwoods State Natural Reserve in Guerneville and enjoyed it. If you've never seen redwoods up close and in person or if you like redwoods in general, this is one of several good options in California. I recommend it if you've never seen redwoods in-person before. Armstrong is technically located north of Guerneville proper, in Sonoma County. We happened to be vacationing in Sonoma Valley so Armstrong was convenient to us, which is why we chose Armstrong over other redwood parks.
We had just visited the significantly-more-popular Muir Woods National Monument in Marin County, roughly an hour drive north of San Francisco, two days earlier: https://www.yelp.com/biz/muir-woods-national-monument-mill-valley. The weather was great - sunny, clear, warm/moderate, and not humid - both during our Thursday 3:40pm visit to Muir Woods and Saturday 1:40pm visit to Armstrong. The crowd levels were also the same: light. Those factors equal, I much preferred Muir Woods to Armstrong.
The reasons why are: (1) Muir Woods felt more dense. More trees, around and above. (2) Collectively and individually, the trees at Muir Woods were more impressive. They were thicker than the ones we saw at Armstrong. Taller, I'm not sure. (3) The atmosphere at Muir Woods felt a lot more magical and fantastical, almost like we were on another planet. (4) Muir Woods was more picturesque. (5) Armstrong, while good in its own right, definitely had more of that public park vibe. Muir Woods just felt special, even though it is public too.
Muir Woods is a national monument whereas Armstrong is a state park. At the time of our visits, Muir Woods charged an admission fee of $15 per person. Reservations had to be booked and fees had to be paid online beforehand. They couldn't be done on-site, an inconvenience if you don't know and don't plan ahead.
Armstrong didn't have an admission fee and no reservation was required. Armstrong did have a parking fee of $10, but only if you drove far enough into the park. There was free parking in the front parking lot, which is where we parked. There were several open spaces when we arrived. We had a 2023 GMC Yukon SUV with seven people. The roads leading into and out of Armstrong were flat, but narrow and tight, especially for our large SUV. Ultimately though, the roads and parking were fine.
Since we visited both parks within 48 hours, it was hard for me not to compare.
Armstrong had a conveniently-located nice picnic table area and OK-at-best restrooms near the front parking lot. We started to hike up the relatively-steep Pool Ridge Trail, but quickly realized it was more effort than our lazy and out-of-shape group wanted to take. We ended up taking an enjoyable, leisurely stroll on the flat trails near the front of the park: Pioneer Nature Trail, Armstrong Nature Trail, and Discovery Trail. These were easy, accessible walking trails. Great for all ages. We probably walked about two miles total on these trails, from the car and back. The highlight for us was the Colonel Armstrong Tree. The sign in front of it said its height was 308 feet, its diameter was 14.6 feet, and its approximate age was 1,400 years. That's an old tree.
Redwoods are also known as sequoias.