The Hopkinton Trails Committee will host an Intro to Trails event on Saturday, April 25, from 10 a.m.-noon at the Hopkinton Public Library’s Betty Strong Room. There will be trail maps, information about volunteer opportunities (including for service projects), books, gear, activities for kids, and information about apps and best practices. At noon, there will be a guided walk to the nearby Center School Trail. The Trails Committee and Trails Club will be on hand for the event and walk to answer questions. For more information, visit hopkintontrailsclub.com.