Join Presidio Trust staff and National Park Service rangers for a gentle four-mile bike ride. Roll through the history and nature of the Presidio at a family-friendly pace that's fun for all. Bring your own bike, rent one from Sports Basement at Crissy Field, or pick up one of many dockless JUMP e-bikes found throughout the Presidio. Registration and bike helmets are required. Appropriate for ages 8 and up.