The Hopkinton Trails Committee and the Hopkinton Trails Club have created a monthly trail volunteer day on the first Saturday of each month from 9 a.m.-noon. The next workday is Saturday, Nov. 1, and will consist of boardwalk construction in the Berry Acres property. Participants can park at the junction of Whalen Road and Chamberlain Street. For more information, visit hopkintontrailsclub.com.