"Help rescue Nob Hill, Chinatown and the Financial District from hazardous cracks and potholes -- all in one energetic, very bike-friendly morning. Join the Good Roads Crew as we spin through these iconic neighborhoods north of Market and south of Broadway. Our goal is to mark every pavement defect we see with spray paint and report them to 311. We usually average 50 potholes in just two hours. Following our heroic efforts, we’ll celebrate with lunch and drinks. First-timers always welcome; we’re a friendly group! Heavy rain cancels."