Bicycling Safety & Regulations

Laws and regulations relevant to bicycling in Mount Rainier National Park includes:

• National Park Service Title 36 Code of Federal Regulations, 4.30 - Bicycles

• Mount Rainier National Park Superintendent's Compendium of Regulations

Please follow these safety guidelines and regulations when bicycling in Mount Rainier National Park:

• Know your physical limits. Most routes include steep and strenuous elevation gains. Carry plenty of water and food to keep you fueled.

• Bicyclists are advised to maintain safe speeds on downhill sections.

• Be prepared for changing conditions and weather. Temperatures may be hot at low elevations and much colder as you climb to higher elevations.

• Follow the same rules of the road as motorists. Bicyclists have the same rights and responsibilities as drivers.

• While in the park, bicyclists are required to ride single file. Mount Rainier’s roads are narrow, winding, and do not have shoulders. Park roads can have heavy summer traffic, including RVs.

  • Bicyclists may ride two abreast only on Westside Road and Carbon River Trail (former road), where vehicles are not allowed. However, please be aware of hikers also using those roads and yield to hikers.

• Use hand signals to let motorists know what you will be doing next.

• Use lights and reflectors in low-light conditions, especially when riding through the forests at lower elevations.

  • Use a white light or reflector that is visible from a distance of at least 500 feet to the front.

  • Use a red light or reflector that is visible from at least 200 feet to the rear.

  • In addition to low light conditions, bicyclists will frequently be riding in mixed sun and shade. Using lights and reflectors in these conditions will help bicyclists be more visible.

• Wear brightly colored, high visibility clothing and a properly fitting helmet.

• Carry identification and emergency medical information.

• Treat pedestrians with the same courtesy you would expect from motorists.

• There is no cell coverage in most areas of the park. In case of emergency, call 911 if possible or report to a ranger.

 

Examples of access signs on road gates, indicating that recreational use is allowed (top) or that the road is closed to recreational use (bottom).

NPS Photo

Bicycling on Closed Roads

• NOTE: In spring 2026, snow plowing operations and maintenance work is expected to be underway 7 days a week, with very limited opportunities to recreate on closed roads. Please check signs on gates and respect the road closures.
• During snow plowing operations or when otherwise posted, park roads are closed to all use, including hiking, skiing, snowmobiles, and bicycling.
• Closed roads may be open to non-motorized vehicles like bicycles when work is not underway on the road. Always check signs on closed road gates before proceeding.

 

Bicycling

Bicycling park roads is both challenging and scenic.

Westside Road: Dry Creek Trailhead

Westside Road in the southwest corner of the park is closed to vehicles after Dry Creek but is open to hiking/bicycling.

Accessibility at Mount Rainier

Learn more about accessibility at Mount Rainier National Park.