Colorado Scenic Byway: Trail Ridge Road - Rocky Mountain National Park

Trail Ridge Road, passing through Rocky Mountain National Park between the towns of Estes Park and Grand Lake, is one of the best ways to see the Continental Divide as it cuts through Colorado.

By: Colorado.com Staff Writer
Updated: March 25, 2024

Splitting North America with a serpentine line, the Continental Divide is quite literally the roof of the continent. If rain falls on the west side of its apex, it will eventually find its way to the Pacific Ocean. If it falls on the east side, it will end up in the Gulf of Mexico.

The divide is a place of high drama, and Trail Ridge Road is the finest place to encounter it without hiking miles of steep terrain. Built from 1929 to 1939, this route is the highest continuous auto road in the country and holds the highest byway distinction. It's truly an all-American icon — the road itself is listed on the National Register of Historic Places.

Please note: Rocky Mountain National Park has a reservation system in place May–Oct. Reservations for visitors are required.

  • In Estes Park, at the beginning of the route, you can either stay at or pay a visit to the historic Stanley Hotel, which was built by F.O. Stanley of Stanley Steamer fame. The hotel also served as the setting for Stephen King’s "The Shining."
  • Just inside Rocky Mountain National Park's Fall River Entrance Station, Horseshoe Park is home to dozens of elk, whose amorous bugling you'll hear in the fall marks the start of mating season. Plan a Rocky Mountain National Park itinerary.
  • Stop at Many Parks Curve, where you can enjoy amazing views of Horseshoe, Moraine and Estes parks.
  • Over the next 20 meandering miles of Trail Ridge Road, you can catch views of glacier-carved valleys, daunting peak summits and distant crystalline lakes.
  • Continue on Trail Ridge Road, and you'll finally cross the Continental Divide at Milner Pass. At the final switchback curve, there is a trailhead for the abandoned mining town of Lulu City, which dates back to the 1880s. Seven miles up, this valley is where the mighty Colorado River has its humble beginnings.

Note: This route is open only from late May to late October because of heavy snowfall.
Distance: 48 miles
Suggested time: Allow 2–3 hours


Colorado is home to 26 Scenic and Historic Byways, 13 of which are also federally designated America's Byways. Read about all 26 in our Quick Guide to Colorado's Scenic & Historic Byways; check out our new Colorado byways microsite with videos, trip tips and more; or view our virtual Colorado Byways Guide.