I take Boots for a hike in Mianus here multiple times a week. There are multiple entrances and tons of trails so it never gets boring. Technically you aren’t supposed to have dogs off-leash but everyone does it and we’re careful to leash-up if we see another dog or person. The most common question I get asked about Mianus is if I feel safe there and the answer is always yes. There are a ton of other people and I have a 90 pound dog!