Trail Ridge Road
Hors Catégorie51 km
Distance
2010 m
Elevation Gain
3.9%
Average Gradient
8%
Max Gradient
The highest continuous paved road in the United States traverses Rocky Mountain National Park from Estes Park (2,286m) to Grand Lake (2,527m), reaching a maximum elevation of 3,713m at the Alpine Visitor Center. The eastern climb from Estes Park is the standard cycling approach: 51km to the summit plateau at a gentler 3.9% average that deceives. At altitude above 3,500m, the thin air and consistent exposure make this climb far harder than the gradient suggests — competitive riders from sea level frequently find their power output 20-25% below normal in this altitude range. The tundra section above treeline is extraordinary cycling terrain: a road cut across the roof of the Rockies with elk, bighorn sheep, and marmots as regular spectators. The views across the Never Summer Mountains to the west and the Front Range ridgeline to the east define what cycling in Colorado means. The road is closed to vehicles before 9:00 AM on weekends during summer — a policy specifically beneficial to cyclists who can have the road almost to themselves in the early hours.
Pro Tip
The best strategy for Trail Ridge Road is an ultra-early start from Estes Park — departing at 06:00 gives a two-to-three-hour window on the high tundra before the tourist vehicle traffic intensifies. The Alpine Visitor Center at the summit (3,713m) has toilets and a gift shop but no food service for cyclists specifically. Descend west to Grand Lake for lunch, then return the same way or arrange a car shuttle. Wind is the critical variable: the exposed tundra above 3,500m generates ferocious gusts that can stop a loaded cyclist completely. Check the RMNP road conditions page the morning of the ride.