The Commuter Challenge is a friendly competition that runs for all of May and June, with five member teams making round-trips using alternative transportation instead of driving alone. Team members log each day they use an eligible mode of transportation using the Commute Calendar. At the end of the competition, the team with the highest number of eligible days wins the grand prize. The top 101 teams will receive prizes, and we’ll also have raffles at least once a week. Please see our Prize Page for more details. Our interactive website means participants can track teams' progress and post fun pictures and other information about their teams.