The ride is only 17 miles total, but is it's just spectacular! Take a lunch and take your time. You will want to stop and watch climbers free climb and sleep in their hammocks on Sentinel. If you want to hike or visit the many waterfalls on your way around, there are locations to park and lock your bike. Additionally, if you wish, you can ride to Mirror lake and hike to the falls or to half dome. Also, having a bike comes in handy If you're camping and need provisions. The store has ample supplies and food. If need be, you can take a free shuttle, but I would't recommend it. Overall this is a blessed place! Enjoy.