On Saturday afternoon, April 13, 1957, the Boston Celtics captured their first NBA Championship by defeating the St. Louis Hawks 125-123 in double overtime. The next day, most of the Celtics flew to Des Moines, Iowa, to begin a 21-game tour through the western United States, Hawaii, and British Columbia, bringing their sport to cities and towns that did not have a pro basketball franchise of their own.

This article also includes an overview of a similar tour of NBA All-Stars in April-May 1958.