A great beginner mountain biking trail with views of a baby Christmas tree farm.
There are a bunch of beginner to intermediate mountain biking trails at Skyline Ridge Open Space Preserve (click here for a trail map). There are some beginner mountain biking classes that come here to learn.
There is a Christmas tree farm that usually has small Christmas trees growing. On a rainy day, mountain biking here is particularly fun because of the muddy downhill sections.
There is lots of parking in big dirt lots.