Bicycles are allowed only on designated paved, gravel, and dirt roads within the park. They are not allowed on hiking trails, closed roads, or in the backcountry. There is no off road cycling in Badlands National Park. The mixed grass prairie is easily impacted by wheeled traffic. The badland formations are centuries old, yet very fragile.
Bicycle racks are provided at the Cedar Pass Lodge and selected trailheads.
For your safety, you should wear a helmet and appropriate clothing. Depending on the season, you may need sunglasses, a hat, sunscreen or gloves. Carry plenty of water in all seasons - at least one gallon per person per day. Water is available only at the park visitor centers.
Dirt and gravel roads can be extremely muddy and are frequently impassable. Check on road conditions before setting out.
Use extreme caution when riding on park roads. There are no bike lanes provided. Recreational and agricultural vehicles travel all roads, particularly during the summer months. Drivers will not be watching for bicyclists. Large mirrors on such vehicles pose a hazard for bicyclists.