By plane
The nearest major airport is Denver International Airport IATA: DEN (http://www.flydenver.com) located about 1 hour and 45 minutes away from the park, with connecting service to most major US cities. A smaller option is Eagle County Regional Airport IATA: EGE (http://www.eaglecounty.us...) located near the skiing resorts of Vail and Beaver Creek; however, service to this airport is usually seasonal and confined to the winter months.
By car
From the west: The Kawuneeche Visitor Center is one mile north of the town of Grand Lake on US-34. Grand Lake can be reached from I-70 via US-40 which runs through Empire and over the Berthoud Pass.
From the east: The Beaver Meadows Visitor Center is three miles from downtown Estes Park near the terminus of US-36 and can be reached via several roads. SR-7 runs from Boulder via Lyons and Allenspark along the east side of the park, passing the Longs Peak Ranger Station and intersects US-36 in Estes Park. SR-66/US-36 run from Denver through Longmont up the Big Thompson River canyon. US-34 also intersects US-36 in Estes Park via Loveland and continues on into the park toward the Fall River Visitor Center.
Rental cars are available at the Denver International Airport. If you aren't driving, the Estes Park Shuttle (http://www.estesparkshutt...) offers reasonable one-way and round-trip rates from DEN to downtown Estes Park.
NOTE: While the park is open year-round, the Trail Ridge Road closes in the winter and may not open until the late spring or early summer, depending on the snowpack.