Manitobans are once again being challenged to try busing, biking, walking, paddling or carpooling, in an effort to promote clean air commuting.

The 15th annual Commuter Challenge kicks off this Sunday.

The purpose of the challenge is to encourage healthier, cleaner travel by reducing the reliance on vehicles for trips to and from work or school.

Those participating are encouraged to record their modes of transportation over the course of the week. Each person who participates will be counted as a green commuter.

At the end of the week, the city, town or workplace with the highest average percentage of healthier commuters will be declared the most commuter friendly, and receive a special prize.

Last year, Winnipeg and Thompson claimed gold, holding the highest percentage of participation across Canada in their respective population categories. For Winnipeg, it was our 10th win in the last 11 years, and Manitoba had the highest rate of participation amongst all the provinces.