September in Colorado
Aspen color is peaking. So is your chance.
196 trail guides covering the aspen groves that turn gold in the next two weeks.
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Popular Colorado Trails
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Emerald Lake Trail
A stunning alpine lake hike that passes Nymph Lake and Dream Lake before reaching the spectacular Emerald Lake. Perfect introduction to Rocky Mountain National Park's high country.
Hanging Lake Trail
Colorado's most photographed lake features turquoise waters and a spectacular waterfall. Reservations required year-round due to its popularity and fragile ecosystem.
Manitou Incline
One of Colorado's most famous workouts. Roughly 2,744 railroad-tie steps gain 2,000 feet in under a mile on the old cable railway bed. A free online reservation is required year-round. Descend via Barr Trail to complete the loop.
Royal Arch Trail
A popular Boulder hike from the Chautauqua Park trailhead leading to a natural sandstone arch with stunning views of the city and Flatirons. The upper half involves stair-steps and short Class 2 scrambling, so older kids handle it well; younger kids may find it tough.
Maroon Lake Trail
An iconic easy loop around Colorado's most photographed peaks. The trail offers stunning reflections of the Maroon Bells in the alpine lake.
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What to Pack for a Day Hike in Colorado: The 10 Essentials Checklist
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Sandbeach Lake Trail: A Quiet Wild Basin Hike Under Mount Meeker (2026)
The Sandbeach Lake Trail climbs through the quiet Wild Basin corner of Rocky Mountain National Park to a rare sandy alpine shoreline under Mount Meeker. Distance, parking, permits, and camping.
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