The Chainlink has notched its 10,000th member and is throwing a party to celebrate the milestone, 6-11 p.m., March 31, at Half Acre's Tap Room, 4257 N. Lincoln Ave.

Talk bikes over beer, enjoy a tour of the brewery, nosh on sandwiches from Banh Mi and enjoy the company of fellow members of Chicago's cycling community.

Cost is $10 or save a buck by registering in advance.