Gigantic landscapes, long distances
Give yourself plenty of time. Allow a minimum of two hours for driving the Generals Highway loop alone—plus whatever time you plan to spend outside of the car. Even though roads access only a small portion of the park, it is possible to drive for several hours and still be within the park.

Extreme elevation range, steep curvy roads, variable weather
Be prepared at any time of year for a wide range of temperatures and weather conditions.

The rugged terrain makes for narrow, steep, and very curvy roads and highly variable weather. It can be hot in the Foothills while it is snowing at higher elevations. Drive slowly, use low gear, and watch for signs of engine and brake overheating on steep switchbacks. Avoid grass fires by parking cars only on paved turnouts. There is a vehicle length advisory of 22' (6.7 meters) on the 12 narrow miles of the Generals Highway from Potwisha Campground to Giant Forest Museum.

Remote country
Come prepared to be self-sufficient. Although there are several small convenience and gift shops and plenty of lodging and camping is available in and around the park, smaller stores may not always have all the things you need. Accommodations fill up quickly during the busiest times of the year. It is wise to make reservations well in advance if you are planning to visit during a summer weekend. There is no gas available in the park.