Trail Ridge Road is 48 miles long and connects the entrances in Grand Lake and Estes Park. Running generally east–west through many hairpin turns, the road crosses Milner Pass through the Continental Divide at an elevation of 10,758 ft. The highest point of the road is 12,183 feet (3,713 m), with eleven miles of the road being above tree line which is approximately 11,500 feet (3,505 m). The road is the highest continuously paved highway in the country, and includes many large turnouts at key points to stop and observe the scenery.
Most visitors enter the park through the eastern entrances near Estes Park, which is about 71 miles northwest of Denver. The most direct route to Trail Ridge Road is the Beaver Meadows entrance, located just west of Estes Park on US 36, which leads to the Beaver Meadows Visitor Center and the park's headquarters. North of the Beaver Meadows entrance station is the Fall River entrance, which also leads to Trail Ridge Road and Old Fall River Road. During peak tourist season, there is free shuttle service within the park and the town of Estes Park provides shuttle service to Estes Park Visitor Center, surrounding campgrounds, and the Rocky Mountain National Park's shuttles.