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 Oct. 5 at Center Trail, near the middle school cross country trail (Loop Road end). Volunteers will do prep work/site clearing for the installation of exercise equipment and replacement of a drainage pipe. For more information, visit hopkintontrailsclub.com.