North Inlet–Tonahutu Loop (CDT, Rocky Mountain NP)
~3 days · 26.6 mi · moderate · Loop
Quick facts
What the North Inlet–Tonahutu Loop (CDT, Rocky Mountain NP) is known for
The Continental Divide Trail's designated loop through Rocky Mountain National Park: 43 km (27 mi) from Grand Lake up North Inlet, over the tundra of Flattop Mountain on the Divide, and back down Tonahutu Creek. A classic 3-day permit trip.
Elevation profile
Elevation ranges from 27,802 ft to 40,075 ft over 26.6 mi. Measured from OSM geometry (approximate).
- Uphill 12.8 mi · 49%
- Downhill 12.1 mi · 46%
- Flat 1.2 mi · 5%
Ridgefold breaks every route into uphill, downhill, and flat — see the full per-day breakdown in the app.
Frequently asked questions
How many days does the North Inlet–Tonahutu Loop (CDT, Rocky Mountain NP) take?
Most backpackers hike the North Inlet–Tonahutu Loop (CDT, Rocky Mountain NP) in about 3 days (2 nights out) over its 26.6 miles, though pace varies with fitness and conditions.
How much elevation gain is on the North Inlet–Tonahutu Loop (CDT, Rocky Mountain NP)?
The North Inlet–Tonahutu Loop (CDT, Rocky Mountain NP) climbs roughly 4,426 ft total — about 166 ft per mile, topping out near 12,231 ft.
Related trails
Sources & attribution
Route geometry and stats derived from OpenStreetMap (© OpenStreetMap contributors, ODbL) — source relation. Stats are approximate and may differ from official surveys; permit rules and conditions change — verify with the managing authority before your trip. Last reviewed July 2026.