The four themes for this year's competition will address the most significant challenges to emerge during the pandemic: Economic recovery and inclusive growth; Health and wellbeing; Climate and environment; Good governance and equality.
Cities with populations of 100,000 or more can submit their ideas to mayorschallenge.bloomberg.org until March 21, 2021.
Fifty finalists representing the world's leading urban innovations will have access to an expansive program of support to test and refine their ideas.
Fifteen grand prize winners will receive $1 million each and robust multi-year support to implement and spread their breakthrough ideas.
Cities around the world are ready for a comeback -- and big, innovative ideas have never been more important. Help us get the word out: