Don't be alarmed if you see a large band of motorcycles (the largest motorcycle parade in the world, in fact) charging up Western Avenue on Sunday morning. It's the 31st annual Motorcycle Parade sponsoring Toys for Tots. The parade kicks off at Dan Ryan Woods at 9:30 a.m. at 83rd and Western, ending up 20 miles north and slightly west at the Marine Corps Reserve Center at Foster Avenue and Troy Street, but the entire parade of several thousand motorcyclists can last up to five hours. Motorcyclists from all over the country come to this event, each bringing one toy or more to donate to the Marine Corps Reserve Toys For Tots Program. Don't have a Harley but want to participate? Bring toys to Dan Ryan Woods, the Marine Corps Reserve Center, or anywhere on Western Avenue, along the parade route. And don't worry – if you need to cross Western Avenue during the parade, the motorcyclists are grouped into four or five groups spaced 15 to 20 minutes apart to allow for cross traffic. But if you're in a hurry – you've been warned.