In summer and fall Jackson Hole is an avid bicycling community. Miles of trails wind in and around the valley supplying mountain bikers with varied terrain and varied difficulty levels. From steep climbs and descents to flat, smooth roads with spectacular views, the area has rides for bikers of all abilities.
Rental bikes are available at various bicycle shops in Jackson and the town of Moose.
A few reminders. A good fit is important especially with a rental that you're not familiar with. Carry a patch kit and pump and know how to use them. Or, consider one of the bike tour operators in town. They supply transportation, bikes and information about the surroundings on the ride.