Sourdough Trail
8.9 mi · ▲ 1,797 ft · 3 hr 52 min
Sourdough Trail is an 8.9-mile out-and-back near Caribou City, CO. It climbs 1,797 ft, with sections as steep as 19% grade. It scores 25/100 on the Ambleway Wildness scale: green fringe.
Elevation
0 mi9,046 – 10,155 ft · steepest grade: 19%9.0 mi
Getting there
Trailhead: Niwot Ridge 40.03171, -105.53293
Nearest town Caribou City, CO
Directions
AMBLEWAYwww.ambleway.com
Sourdough Trail
8.9 mi · ▲ 1,797 ft · 3 hr 52 min
Elevation 9,046–10,154 ft
Out & Back
Trailhead: Niwot Ridge · 40.03171, -105.53293
Weather Sep 5: Drizzle, high 70°F / low 55° · precip 11% · wind 8 mph · sunrise 6:35 AM · sunset 7:29 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.
- 0.6 miContinue straight onto Fourmile Creek Spur, heading SE.
- 350 ftReach the turnaround, then head back the way you came.
- 400 ftContinue straight onto Fourmile Creek, heading N.
- 0.6 miSharp left, heading E.
- 1.3 miSharp left onto Sourdough Trail, heading NW.
- 1.8 miSharp right, heading SE.
- 300 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
55% dirt12% gravel33% unspecified
Weather
DrizzleTemperature 70°F55°
Precip11%Wind8 mphUV7Humidity34%
Hourly temperature
70°55°
Sunrise 6:35 AM12 AM3 AM9 AM12 PM3 PMSunset 7:29 PM
Sun
69°52°
40%
Mon
68°49°
30%
Tue
72°46°
32%
Wed
75°49°
38%
Thu
72°47°
33%
Fri
71°46°
30%
More from Niwot Ridge Trailhead
- Sourdough Trail 3.8 mi · ▲ 741 ft
- Sourdough Trail 9.2 mi · ▲ 1,138 ft
- Sourdough Trail 9.3 mi · ▲ 1,937 ft
- Silver Lake Reservoir & Niwot Ridge 14.6 mi · ▲ 3,210 ft
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Hikes near Caribou City, Colorado