Many Blackhawks fans listened to advice and took public transportation, but that created big problems for the ride back home.
An estimated 2 million people came into downtown Chicago for the celebration, even more than in 2010.
But as they headed toward Union Station to head home, revelers found there were too many people, not enough trains.
Metra responded to the crowds on Friday afternoon, stating, "All downtown terminals experienced heavy crowding this afternoon as people attempted to return home from today's Blackhawks event. Metra trains are departing from the downtown stations when they reach capacity and may depart prior to their scheduled departure time. Metra is using every train car and locomotive at our disposal. We appreciate our riders' patience and are accommodating them as quickly possible."