Clutch, Killswitch Engage – 7 p.m.; Clyde Theatre, 1808 Bluffton Road; Clyde box office, 800-514-3849 and ClydeTheatre.com.
Shipshewana Flea Market – 8 a.m. to 4 p.m.; 345 S. Van Buren St., Shipshewana; Shipshewanafleamarket.com; ends Sept. 25.
Little River Ramblers Nature Hike – Sponsored by Little River Wetlands Project; 9 to 11 a.m.; meet at Eagle Marsh barn, 6801 Engle Road; free; 478-2515 or firstname.lastname@example.org.
Trek the Trails – 6 p.m.; 8-mile bike ride; Swinney Park West trailhead, first parking lot, east of the main drive, 2200 W. Jefferson Blvd.; free.
Three Rivers Festival – Various events and times throughout Fort Wayne; for schedule and times, go to threeriversfestival.org; ends July 20.