NPS Photo
Great Basin Visitor Center
Mountain biking is allowed only on roads (no trails) in the park (with the exception of the Great Basin Visitor Center to the town of Baker Trail - 0.2mi). Helmets are strongly recommended. There are primitive roads to access for more of a challenge.
For more information on possible rides, check with a ranger at a visitor center.
The adjacent U.S Forest Service and BLM lands offer roads and trails for all skill levels of mountain bikers.