Hola from the Caribe sur!
I took a bike ride yesterday and turned it into a tour you can take yourself, complete with photos, a map and the howls of a monkey! The surprise ending is something you may need my help with, if you decide to come to Costa Rica and try it. But even if you can't come here, you can enjoy the ride through my photos. I love to share my fun!
http://www.travelexperiencecostarica.com/2010/07/18/costa-rica-bike-ride/