AMBLEWAY Wildest hikes

Boulder Open Space and Mountain Parks

Coal Seam Trail & Greenbelt Plateau Trail

3.4 mi · ▲ 196 ft · 1 hr 14 min

Coal Seam Trail & Greenbelt Plateau Trail is a 3.4-mile out-and-back in Boulder Open Space and Mountain Parks near Marshall, CO. It is mostly level, with 196 ft of elevation gain. It scores 0/100 on the Ambleway Wildness scale: paved and peopled.

Elevation

0 mi5,712 – 5,929 ft4.1 mi

Getting there

Trailhead: FlatIrons Vista Trail 39.92859, -105.23458
Nearest town Marshall, CO · Official trailhead info (bouldercolorado.gov)
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Directions

AMBLEWAYwww.ambleway.com

Coal Seam Trail & Greenbelt Plateau Trail

3.4 mi · ▲ 196 ft · 1 hr 14 min

Elevation 5,712–5,929 ft

Out & Back · Boulder Open Space and Mountain Parks

Trailhead: FlatIrons Vista Trail · 39.92859, -105.23458

Weather Sep 6: sunrise 6:34 AM · sunset 7:26 PM

Transit-accessible: CO 93 & CO 128 stop 24 m from the trailhead · Parking lot at the trailhead

  1. Start on FlatIrons Vista Trail, heading NE.
  2. 500 ftTurn left onto Greenbelt Plateau Trail, heading NE.
  3. 1.3 miTurn left onto Greenbelt Plateau Bypass, heading E.
  4. 50 ftTurn right onto Community Ditch Trail, heading E.
  5. 0.3 miBear left onto Coal Seam Trail, heading SW.
  6. 50 ftContinue straight onto Community Ditch Trail, heading SW.
  7. 100 ftReach Greenbelt Plateau Trail, then turn around and head back the way you came.
  8. 100 ftContinue straight onto Coal Seam Trail, heading SW.
  9. 50 ftBear right onto Community Ditch Trail, heading SW.
  10. 0.3 miTurn left onto Greenbelt Plateau Bypass, heading E.
  11. 50 ftTurn right onto Greenbelt Plateau Trail, heading E.
  12. 1.3 miTurn right onto FlatIrons Vista Trail, heading S.
  13. 400 ftArrive back at the trailhead.

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

Trail map, photos and weather for this hike: www.ambleway.com/hikes/coal-seam-trail-greenbelt-plateau-trail-out-back-5-km

Trail surface

59% dirt41% gravel

Weather

Sunrise 6:34 AMSunset 7:26 PM

Good to know

  • Transit-accessible: CO 93 & CO 128 stop 24 m from the trailhead
  • Parking lot at the trailhead

More from FlatIrons Vista Trail Trailhead

Hikes near Marshall, Colorado