17 May 2018 2018 Mountain Biking Season Open by Millstone Trails Association | posted in: Events, General News | 0 - add a comment Surprise! We are OPEN. Get your memberships or day passes today and get on your bike! Please avoid remaining wet spots; our Trail Crew appreciates your cooperation. Leave a Reply Click here to cancel reply. Name * Email (will not be published) * Website 3 × = 27 Comment Notify me of follow-up comments by email. Notify me of new posts by email.