BOULDER - Online registration for Boulder's June 25 Bike to Work Day has opened at www.walkandbikemonth.org.

The day is one of more than 60 free events planned for Walk and Bike Month, which is sponsored by the GO Boulder segment of the city's transportation department as well as multiple corporate sponsors.

Community Cycles, a nonprofit advocate of safe bicycle use, is coordinating Boulder's 38th annual Walk and Bike Month activities. Planners are projecting 7,000 participants in Bike to Work Day alone.