The trails are sustainably built on rocky terrain and soils that drain well. There are numerous boardwalks, bridges and armored sections that address any areas of concern. The trails have seldom ever closed during wet conditions and are open most all of the time when raining and/or after the spring thaw and trails have been declared open-for-the-season. Riders should, however, exercise extreme caution on boardwalks and exposed bedrock, as they do become slippery when wet. That all said, our Mountain Bike Shuttle service runs rain or shine!