Commuter Challenge is an annual, three month event, April thru June, organized by Metro Transit to promote awareness and use of commuting options such as busing, carpooling, vanpooling, biking, walking, and telecommuting.

This event was formerly known as Bike Bus or Carpool (B-BOP) week (see more about the history of B-BOP). The Commuter Challenge "challenges" people to try one or more alternatives to driving alone. Individual commuters who wish to participate must complete an online pledge form to be eligible to win prizes.