The annual Bike to Work Day celebration will be held Friday from 7 to 10 a.m.
Motorists are advised that traffic at Court Square will be affected by the event.
Free coffee, breakfast food and prizes will be offered on Court Square.
To sign up for the commuter challenge, become a team captain or volunteer, go online at www.hburgbike2work.org.
The event is sponsored by the city of Harrisonburg and Shenandoah Valley Bicycle Coalition.