Mountain Bike! Washington provides detailed information on over 85 breathtaking rides throughout Washington, including tours in the Cascade Mountains, the Olympic Mountains, and rides in and around Seattle, Spokane, Bellingham, and Vancouver. From high-adrenaline single-track to mellow jaunts through fabulous scenery, if it's good riding, it's profiled here.

Each route profile features at-a-glance information, a thorough ride description, a detailed trail map, helpful sources of information, proximity of important services, valuable commentary on elevation changes and possible hazards, and a rescue index.

Mountain Bike! Washington also features interesting and entertaining photographs, vivid descriptions of native flora and fauna, a glossary of mountain biking terms, and tips on mountain biking etiquette.