Bicycling is for road bikes only.
Trail riding is strictly prohibited. Bicycles can be rented at the Yosemite Store,
and are single-gear, fat-tire-road-bike cheapos meant for the foot trails and specially built
bicycle trails on the valley floor. Although it is possible to get a good workout
and a satisfying ride, bring your road bikes only. Some people ride from the valley
floor all the way to Tuolumne Meadows. It is a VERY strenuous ride, about 40 miles
long, and a 5,000 ft. gain in elevation. Not for the out-of-shape duffer.
Also, the ride to Glacier Point is much the same, but the return trip is a