This week

Hall County 4-H Spring Equine Classic, Gainesville. Western show, 6-8 p.m. Friday; English show, 9 a.m. to 3 p.m. Saturday, Chicopee Woods Agricultural Center, 1855 Calvary Church Road, Gainesville. Free for spectators. 770-535-8291.

Special Trillium Trek Training Clinics. Learn about orienteering, nature facts and first aid. Learn more about the trek. 10 a.m. to 1 p.m. Saturday, April 17 and 24, Elachee Nature Science Center, 2125 Elachee Drive, Gainesville. Call to register. 770-535-1976 or click here.

Bike ride, Gainesville. Chicken City Cyclists. More than 30 miles; moderate. 10 a.m. Saturday, Dewberry Church, intersection of Clarks Bridge Road and Glade Farm Road, Gainesville. unnoldl@charter.net.

Gardens on Green, Gainesville. Open garden forum led by Elaine Kelley. 1 p.m. March 31, Gardens on Green, 711 Green St., Gainesville.

Upcoming

Spring Garden Expo, Gainesville. Hall County Master Gardeners. More than 60 vendors selling plants, garden art and products; activities for kids and "Ask a Master Gardener" information booth. 8 a.m. to 6 p.m. April 9 and 8 a.m. to 4:30 p.m. April 10, Chicopee Woods Agricultural Center, 1855 Calvary Church Road, Gainesville. Free admission and parking. 770-535-8293.

Stars Over Elachee at Chicopee Lake, Gainesville. Learn about astronomy and how to use a telescope to view the night sky. For adults and children 8 and older. Bring a flashlight and pencil. Reservations required. 7:45-9:45 p.m. April 18, Elachee Nature Science Center, 2125 Elachee Drive, Gainesville. $10 adults, $5 children age 2-12, free for Elachee members. 770-535-1976.

Ongoing

Triathlon Club, Gainesville. No experience necessary. Meets 7 p.m. second Tuesdays, Fit 2 Tri Store, 1292 Thompson Bridge Road, Gainesville. 770-712-9129 or fit2tri@gmail.com.

ISI Cycling ride, Gainesville. 35-45 mile ride. No ride in rain or temperature less than 36 degrees. 1 p.m. Sundays, Kroger Shopping Center, 3630 Thompson Bridge Road, Gainesville. 678-231-0417.