There are over 12 miles of paved bike trails on the Yosemite Valley floor and almost no hills. We rented two bicycles with trailers behind to haul Alex and Serene at the Curry Village bike stand. We were able to park the car and travel far & wide across the valley for hours -- something we never could have done on foot. The trails are easy to navigate, with detailed postings along the way to help guide you. The kids loved the breeze blowing in their hair and being able to stop to jump in the river, browse the snack shop and take in the breathtaking views. With little kids, we never would have been able to enjoy Yosemite so much without the tip to rent the bikes!