Embarcadero Plaza

Critical Mass begins at this downtown square at 5:30 on the last Friday of every month. The group ride started here, and is now in hundreds of cities worldwide. It’s a thrilling, charming, and authentic way to explore the city—a giant bicycle parade of hundreds celebrating a friendlier, greener, healthier way to get from point A to point B. Most rides start as a celebration with a slow pace and a density that fosters a social atmosphere and makes it easy to meet the riders around you. The event can feel more political as the night goes on, so drop out whenever you like. And come ready: The mass doesn’t wait if you need to stop to pee.