Seattle is a great place to be a mountain biker because of the robust network of park trails found within easy access from the city. On top of that, it is also home to a vibrant community that takes grassroots initiatives to set aside and build even more first-rate places to ride.
One of the best examples of this is right in the heart of city: the I-90 Colonnade Mountain Bike Skills Park. Located beneath the highway, this park is small but it packs in plenty of punch, offering a range of skill-building features such as jumps and high-banked berms. Known as the first urban mountain bike skills park in the U.S., the I-90 Colonnade has since served as a model for other similar spaces throughout the country. For a great combination of technical features and flowy XC single-track, Duthie Hill, in Issaquah, is the place to go. Like the I-90 Colonnade, Duthie Hill exists thanks to the efforts of the Evergreen Mountain Bike Alliance.