The end of June and first week of July feature the sights, sounds and fun of the Lakeside Festival and the famous America’s Cardboard Cup Regatta. Carnival rides and music are a big part of the Taste of Crystal Lake, with entertainment for all ages. The City of Crystal Lake, in conjunction with the Chamber of Commerce, puts on a big parade and fireworks.
During the last week of July, Crystal Lake is host to the McHenry County Youth Sports Association/USSSA Open International Summer Baseball Championships. More than 120 youth baseball teams from around the world participate on five age levels. The Crystal Lake Park District has been a major sponsor and organizer of this event since 1994.
Historic downtown Crystal Lake is the site for several events, including annual sidewalk sales, the Johnny Appleseed Festival, the Farmers Market (throughout the summer), and the Festival of Lights Christmas Parade.