Commuters by the hundreds took two wheels to work and school on Thursday as part of the 16th annual Bike to Work Day in Sonoma County.

“We have 335, a little bit up from last year,” said Santa Rosa transportation planner Mike Ivory, who was counting bicyclists at Santa Rosa City Hall, where booths were set up for food, drink and information. “The people who did come in were totally stoked. At 7:30 we had a crowd of 200 people here, a real party atmosphere.”