Gross Reservoir–Twin Sisters Peak Trail, 3 sights

9.9 mi · ▲ 2,070 ft · 4 hr 20 min

Gross Reservoir–Twin Sisters Peak Trail, 3 sights is a 9.9-mile out-and-back near Lake Shore Park, CO. The route reaches Gross Reservoir. It climbs 2,070 ft, with sections as steep as 30% grade, and is mostly dirt. It scores 72/100 on the Ambleway Wildness scale: backcountry feel.

Elevation

0 mi7,333 – 8,590 ft · steepest grade: 30%10.1 mi

Getting there

Trailhead: Winiger Ridge Road 39.95552, -105.39395
Nearest town Lake Shore Park, CO

Directions

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Gross Reservoir–Twin Sisters Peak Trail, 3 sights

9.9 mi · ▲ 2,070 ft · 4 hr 20 min

Elevation 7,335–8,590 ft

Out & Back

Trailhead: Winiger Ridge Road · 39.95552, -105.39395

Weather Sep 5: Overcast, high 80°F / low 60° · precip 8% · wind 8 mph · sunrise 6:33 AM · sunset 7:30 PM

Parking lot at the trailhead

  1. Start on Winiger Ridge Road, heading NW.
  2. 0.5 miTurn right onto Forsythe Canyon Trail, heading E.
  3. 0.8 miPass Gross Reservoir.
  4. 0.3 miSharp right onto Forsythe Spurs Road, heading NE.
  5. 0.2 miTurn right, heading N.
  6. 0.2 miSharp left onto Twin Sisters Peak Trail, heading E.
  7. 1.1 miTurn right onto Twin Sisters Road, heading NW.
  8. 1.7 miReach Gross Reservoir, then turn around and head back the way you came.
  9. 1.7 miTurn left onto Twin Sisters Peak Trail, heading SW.
  10. 1.1 miSharp right, heading S.
  11. 0.2 miTurn left onto Forsythe Spurs Road, heading W.
  12. 0.2 miSharp left onto Forsythe Canyon Trail, heading NW.
  13. 1.2 miTurn left, heading NW.
  14. 0.2 miContinue straight onto Winiger Ridge Road, heading SE.
  15. 0.4 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

64% dirt36% unspecified

Weather

OvercastTemperature 80°F60°
Precip8%Wind8 mphUV7Humidity38%
Hourly temperature
80°60°
Sunrise 6:33 AM12 AM3 AM9 AM12 PM3 PMSunset 7:30 PM
Sun 77°53° 30%
Mon 81°58° 39%
Tue 77°54° 32%
Wed 81°54° 37%
Thu 83°57° 32%
Fri 82°54° 26%

Good to know

  • Parking lot at the trailhead

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