Metra Delays. Track construction could cause delays of up to 30 minutes Saturday and Sunday. For additional information visit metra.com/constructionnotices.

Homewood Outdoor Farmers Market. The market will be open from 8 a.m. to 1 p.m. in Martin Square on Martin Avenue between Chestnut and Ridge Roads in downtown Homewood. Vendors will offer fresh produce, baked goods, handcrafted jewelry, skincare and more. Food trucks will be on hand and ready-to-eat meals will be available.

STEM Saturday. Science play and learning from 10 a.m. to 1 p.m. at Homewood Science Center, 18022 Dixie Highway.

Barb & Dan’s Road Ride. Riders of all experience levels can join the group which leaves at 8 a.m. from GoodSpeed Cycles, 2125 183rd St. in Homewood. There is a no-drop group that rides about 20 miles and stronger riders sometimes go farther. Helmets required, daytime lights strongly recommended.

Off-leash Ride. A leisurely just-riding-around nine-mile ride every Saturday. Route includes Butterfield Creek bike path, Rovers Run and Izaak Walton Preserve. Starts at GoodSpeed Cycles, 2125 183rd St., at 8:30 a.m. sharp, ends back at the shop 9:45ish for donuts.