I've seen some posts about the Rosarito to Ensenada ride in Baja. The next one is April 30th. I've done it a bunch of times. It's a fun ride, but the shuttle logistics are a bigger pain in the butt than actually riding the 50 miles (-; I've always used a company named "Outback". They're great people! They have one-day and weekend trips in support of the ride. They have a link from the offical ride website. www.rosaritoensenada.com