Chicago police say more than 2 million people turned out to celebrate the Blackhawks' Stanley Cup win.
Fans clad in the team's colors of red and black started streaming into the city early Friday and by mid-morning they were lined up along the parade route. Later fans streamed into Grant Park, where a huge throng of fans waited for players to speak.
The Chicago Fire Department says just a few people suffered heat-related health problems on what turned into a warm day. Department spokesman Larry Langford says 42 people had to be taken to area hospitals.
He also says 20 people jumped in nearby Lake Michigan - something they are not supposed to do - and firefighters made sure all 20 got out of the water.