Idaho trails · cdt

cdt

A 22.4-mile point-to-point in Idaho, with 2,141 ft of climbing. Reaches Rock Spring and other lake/pass/spring/summit destinations.

Open in the interactive map →

Elevation profile

The climbing is spread fairly evenly along the route. It gives back about 3,989 ft along the way, so it rolls rather than climbing steadily.

Reaches

• Rock Spring (spring)
• Pete Creek Divide (pass)
• Aldous Lake (lake)
• Little Table Mountain (summit)

Getting there

Aldous Lake. 44.50799, -111.84198 · directions

Daylight at the trailhead

On August 31, 2026 — the day this page was generated — first light reaches this trailhead at 6:18 a.m., the sun rises at 6:48 a.m. and sets at 8:05 p.m., and the last usable light fades about 8:36 p.m. (MDT) — 13 h 17 min of daylight. At about 2.7 mph plus 30 minutes per 1,000 feet of climbing, the 22.4-mile route takes roughly 9 h 23 min, so leaving the trailhead at sunrise puts you back around 4:11 p.m. — 3 h 54 min before sunset.

Loop options

• Lake Creek + Continental Divide National Scenic Trail + cdt — 8.0 mi loop, 1,595 ft gain
• cdt + Continental Divide National Scenic Trail — 15.1 mi loop, 4,633 ft gain
• cdt + Continental Divide National Scenic Trail — 4.5 mi loop, 974 ft gain

Across the border

• Continues into MT as Continental Divide Trail — view on the map
• Continues into MT as Little Table — view on the map