Nederland, CO: Lake Dorothy

Visit the highest lake in the Indian Peaks Wilderness on this 6.9-mile out-and-back through steep alpine terrain.
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From the Fourth of July Trailhead, head northwest on Arapaho Pass Trail toward a basin below Quarter to 5 Peak. After the 1.4-mile climb, which features 1,000 feet of vertical, you’ll reach the dilapidated remains of the Fourth of July Mine. At the junction with the Arapaho Glacier Trail, bear left to continue west toward Arapahoe Pass. Upon hitting the pass (11,906 feet), follow the trail east before breaking toward the picturesque 12,061-foot Lake Dorothy. Look west for spectacular panoramas of Neva’s craggy crown perched behind the lake’s boulder-strewn far shoreline. 

-Mapped by Chris Hood

Trail Facts

  • Distance: 11.0



Location: 39.994917, -105.633942

From the Fourth of July trailhead, head northwest on the Arapahoe Pass Trail. You'll climb for 1,000 feet before reaching a ridge below Quarter to 5 Peak at mile 1.4.


Location: 40.010721, -105.659122

At the Fourth of July Mine, take the left fork to continue pushing up the Arapaho Pass Trail.


Location: 40.014468, -105.677876

Break above 11,900 feet as you reach Arapaho Pass.


Location: 40.013104, -105.682039

Bear left to bid adieu to the Arapaho Pass Trail and swing west toward Lake Dorothy.


Location: 40.012694, -105.683713

Reach Dorothy Lake, an ideal spot for lunch.

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