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Colorado
1.9 mi
Distance
518 ft
Gain
We won't guess. Here is exactly what we do and don't know.
What we do know
Inside San Juan National Forest
3 managing-area boundaries mapped — agency alerts for them feed this page automatically.
Boundary data
What's missing
No access route mapped
We don't yet know which road reaches this trailhead, so we can't tell you if it's gated.
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Why you'll love it
Upper Fourmile
AI-suggested draft · review before you go
Upper Fourmile is a 1.9-mile out-and-back trail located in Colorado near the Rio Grande National Forest's Saguache Ranger District. The route features 518 feet of elevation gain, making it a moderate hike suitable for those seeking a shorter outing with noticeable vertical challenge. Managed by the Rio Grande National Forest, the trail offers access to the backcountry in this region of south-central Colorado. The out-and-back format allows hikers to control their total distance and turn around at their preferred point, with the full route covering roughly 3.8 miles round trip at a steady climbing grade. This trail is ideal for hikers looking to gain elevation efficiently within a compact distance, making it useful for building fitness or fitting a solid workout into a shorter timeframe. The elevation gain relative to the distance suggests consistent uphill sections throughout the hike.
Overlook
~16 min drive
0.0 mi · Easy
Windy Pass
~17 min drive
8.2 mi · Expert
Williams Fork Lake
~21 min drive
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Coal Creek
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Fourmile Stock Dr.
~2 min drive
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Piedra Falls
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Anderson
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Turkey Creek
~7 min drive
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Fourmile Winter
~9 min drive
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Middle Fork
~10 min drive
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