Boulder Open Space and Mountain Parks

Marshall Valley Trail–McCaslin Trail, 4 sights

13.5 mi · ▲ 744 ft · 4 hr 52 min

Marshall Valley Trail–McCaslin Trail, 4 sights is a 13.5-mile out-and-back in Boulder Open Space and Mountain Parks near Marshall, CO. It climbs 744 ft. It scores 0/100 on the Ambleway Wildness scale: paved and peopled.

Elevation

0 mi5,512 – 5,745 ft14.2 mi

Getting there

Trailhead: Marshall Valley 39.95584, -105.21856
Nearest town Marshall, CO

Directions

AMBLEWAYwww.ambleway.com

Marshall Valley Trail–McCaslin Trail, 4 sights

13.5 mi · ▲ 744 ft · 4 hr 52 min

Elevation 5,511–5,744 ft

Out & Back · Boulder Open Space and Mountain Parks

Trailhead: Marshall Valley · 39.95584, -105.21856

Weather Sep 5: Overcast, high 91°F / low 66° · precip 9% · wind 7 mph · sunrise 6:32 AM · sunset 7:29 PM

  1. Start on Marshall Valley, heading SE.
  2. 0.1 miSharp left onto Marshall Valley Trail, heading E.
  3. 0.4 miContinue straight onto Singletree Trail, heading E.
  4. 3.2 miSharp right, heading E.
  5. 0.5 miTurn right onto Meadowlark Trail, heading NE.
  6. 1.8 miTurn left onto McCaslin Trail, heading NE.
  7. 0.9 miReach Marshall Valley Trail, then turn around and head back the way you came.
  8. 0.9 miTurn right, heading S.
  9. 450 ftContinue straight onto Meadowlark Trail, heading SW.
  10. 2.2 miSharp left onto Singletree Trail, heading NW.
  11. 3.2 miContinue straight onto Marshall Valley Trail, heading W.
  12. 0.4 miSharp right onto Marshall Valley, heading S.
  13. 50 ftArrive back at the trailhead.

Each distance is the walk from the previous step. Tap a step for a map of its junction.

Trail surface

58% gravel29% dirt11% paved2% unspecified

Weather

OvercastTemperature 91°F66°
Precip9%Wind7 mphUV7Humidity27%
Rained 0.1″ 5 days ago
Hourly temperature
95°65°
Sunrise 6:32 AM12 AM3 AM9 AM12 PM3 PMSunset 7:29 PM
Sun 88°63° 19%
Mon 87°66° 33%
Tue 88°60° 26%
Wed 90°59° 29%
Thu 90°65° 27%
Fri 92°60° 20%

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