Boulder Open Space and Mountain Parks

Loukonen Brothers Reservoir–North Rim Trail, 3 sights

3.3 mi · ▲ 195 ft · 1 hr 12 min

Loukonen Brothers Reservoir–North Rim Trail, 3 sights is a 3.3-mile out-and-back in Boulder Open Space and Mountain Parks near Altona, CO. The route reaches Loukonen Brothers Reservoir at the turnaround, 1.6 miles in. It is mostly level, with 195 ft of elevation gain, and mostly dirt. It scores 8/100 on the Ambleway Wildness scale: paved and peopled.

Elevation

0 mi5,259 – 5,378 ft3.4 mi

Getting there

Trailhead: North Rim Trail 40.08760, -105.25152
Nearest town Altona, CO

Directions

AMBLEWAYwww.ambleway.com

Loukonen Brothers Reservoir–North Rim Trail, 3 sights

3.3 mi · ▲ 195 ft · 1 hr 12 min

Elevation 5,259–5,377 ft

Out & Back · Boulder Open Space and Mountain Parks

Trailhead: North Rim Trail · 40.08760, -105.25152

Weather Sep 5: Light drizzle, high 92°F / low 63° · precip 5% · wind 5 mph · sunrise 6:33 AM · sunset 7:28 PM

  1. Start on North Rim Trail, heading SW.
  2. 0.4 miTurn right onto Sage Trail, heading SW.
  3. 0.6 miBear right onto Left Hand Trail, heading W.
  4. 0.5 miTurn right, heading E.
  5. 0.2 miReach Loukonen Brothers Reservoir, then turn around and head back the way you came.
  6. 0.7 miBear left onto Sage Trail, heading NE.
  7. 0.6 miTurn left onto North Rim Trail, heading N.
  8. 0.3 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

67% dirt33% gravel

Weather

Light drizzleTemperature 92°F63°
Precip5%Wind5 mphUV7Humidity28%
Rained 0.1″ 5 days ago
Hourly temperature
95°60°
Sunrise 6:33 AM12 AM3 AM9 AM12 PM3 PMSunset 7:28 PM
Sun 90°64° 19%
Mon 89°67° 26%
Tue 89°60° 28%
Wed 91°60° 28%
Thu 87°64° 27%
Fri 93°60° 21%

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