Become familiar with your pepper spray, real all instructions, and know its limitations. Pepper spray must be instantly available, not in your pack. Remember, carrying pepper spray is not a substitute for vigilance and good safety precautions. Someone's safety may depend on it. Attention Anglers and Boaters Yellowstone National Park's fishing season opens the Saturday of Memorial Day weekend and closes the first Sunday in November.
Details are available on our fishing pages .
Permits are required for the use of boats or float tubes . Backcountry Permits Permits are required for overnight backcountry use and may be obtained in person up to 48 hours in advance from any ranger station. Rangers will provide information on weather, trails, and other conditions. See our Backcountry Trip Planner for online details. Bicycling Bicycling is permitted on established public roads, parking areas, and designated routes.