Call ahead and check the weather. The only roads that allow a driver to cross the park without doubling back close due to snow from mid-October to June. These roads may close weeks earlier depending on the weather. Call the Rocky Mountain National Park's office at (970) 586-1206.
Drink plenty of water before you get to the park. The main road reaches an elevation of 12,183 feet. Adjusting to the high altitude is easier if you are well-hydrated.
Select a driver who is not afraid of heights. Although it's well-maintained, the main road is often flanked by intimidating cliffs, and doesn't always have a guardrail where you would expect one.
Heading west on I-70, follow signs for Highway 36 East near Denver. Follow Highway 36 into the town of Estes Park, and then to the park's Beaver Meadows Entrance Station. Continue along Highway 36 to Trail Ridge Road.
Heading east on I-70, access the Rocky Mountain National Park by exiting onto Highway 40 North at Exit 232. Follow Highway 40 to Trail Ridge Road and enter the park at the Grand Lake Entrance Station.
Follow Trail Ridge Road across the park stopping as time allows. Maps available at the Ranger stations provide information about trails, attractions and any programs the park offers.
Exit the park at the opposite end from where you entered. Eastbound travelers follow Trail Ridge Road to Highway 36 East and follow it back to I - 70. Westbound travelers follow Trail Ridge Road to Highway 40 South and take it back to I - 70.
