Sourdough Trail
9.3 mi · ▲ 1,937 ft · 4 hr 4 min
Sourdough Trail is a 9.3-mile out-and-back near Caribou City, CO. It climbs 1,937 ft, with sections as steep as 18% grade. It scores 24/100 on the Ambleway Wildness scale: paved and peopled.
Elevation
0 mi8,921 – 10,155 ft · steepest grade: 18%9.5 mi
Getting there
Trailhead: Niwot Ridge 40.03171, -105.53293
Nearest town Caribou City, CO
Directions
AMBLEWAYwww.ambleway.com
Sourdough Trail
9.3 mi · ▲ 1,937 ft · 4 hr 4 min
Elevation 8,923–10,154 ft
Out & Back
Trailhead: Niwot Ridge · 40.03171, -105.53293
Weather Sep 4: Overcast, high 74°F / low 54° · precip 17% · wind 6 mph · sunrise 6:34 AM · sunset 7:31 PM
- Start on Niwot Ridge, heading NE.
- 0.5 miTurn right, heading NE.
- 350 ftSharp left onto Sourdough Trail, heading W.
- 1.8 miSharp right, heading SE.
- 1.3 miSharp right onto Fourmile Creek, heading W.
- 0.8 miContinue straight onto Fourmile Creek Spur, heading S.
- 0.2 miReach the turnaround, then head back the way you came.
- 0.2 miContinue straight onto Fourmile Creek, heading NW.
- 0.8 miSharp left, heading E.
- 1.3 miSharp left onto Sourdough Trail, heading NW.
- 1.8 miSharp right, heading SE.
- 350 ftTurn left onto Niwot Ridge, heading E.
- 0.5 miArrive back at the trailhead.
Each distance is the walk from the previous step. Tap a step for a map of its junction.
Trail surface
57% dirt12% gravel31% unspecified
Weather
OvercastTemperature 74°F54°
Precip17%Wind6 mphUV8Humidity31%
Hourly temperatureRain chance
75°50°
Sunrise 6:34 AM12 AM3 AM9 AM12 PM3 PMSunset 7:31 PM
Sat
71°56°
17%
Sun
68°52°
40%
Mon
68°50°
30%
Tue
71°47°
32%
Wed
71°49°
38%
Thu
72°49°
33%
More from Niwot Ridge Trailhead
- Sourdough Trail 3.8 mi · ▲ 741 ft
- Sourdough Trail 8.9 mi · ▲ 1,797 ft
- Sourdough Trail 9.2 mi · ▲ 1,138 ft
- Silver Lake Reservoir & Niwot Ridge 14.6 mi · ▲ 3,210 ft
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Hikes near Caribou City, Colorado