Grand Mesa, Uncompahgre and Gunnison National Forests · Colorado

Ridge 70

1.6 mi of trail, end to end · native material surface · trail No. 9419 · trail class 2 · typical grade 8-10% · tread 18-24 inches wide · hiking, horse

Begins at the forest's mile 0, 38.8870, -107.1025 - no trailhead mapped Drive to where the trail begins

Ridge 70 #419 the Forest Service's write-up

season June to October

The Ridge 70 Trail #419 begins at the end of Forest Service Road 826.1C, Irwin Lodge Road, and ends at an intersection with the Scarp Trail #421. The trail starts at about 10,680 feet and begins a steep ascent. The climb is a pretty consistent grade as it nears the ridgeline, it flattens out by time it intersects the Scarp Trail #421. Wildflowers are spectacular in the spring and summer months. The climb will be well worth it for the views of Mt. Owen, Purple Peak and the surrounding area.

Geo-Ref Trail Map Geo-Reference Instructions

Restrictions Open to hiking, horseback, and mountain bike.

This hike on fs.usda.gov

Scarp #421 the Forest Service's write-up

season June to October

The Scarp Trail #421 begins at an intersection with the Ridge 70 Trail and dead ends at Scarp Ridge at the Raggeds Wilderness boundary. The trail climbs a steep grassy hillside which is covered in wildflowers in the spring and summer. It switchbacks steeply to the ridgeline and follows along the ridge until it reaches Scarp Ridge which is marked with a wooden post marker at the summit. From here there are spectacular views of Mt. Own, Ruby Peak, Afley Peak, and Purple Peak to the west/southwest, Blue Lake below, the Oh-Be-Joyful basin below and to the east. There are outstanding view of Lake Irwin and the Anthracite Range on the return route.

Geo-Ref Trail Map Geo-Reference Instructions

Restrictions Open to hiking, horseback, and mountain bike.

This hike on fs.usda.gov

All 762 trails in Grand Mesa, Uncompahgre and Gunnison National ForestsFind a trailForest on fs.usda.gov

About this trail's facts

The lines are the US Forest Service's National Forest System trails layer (public domain), read 2026-10-16 and simplified for the map; the length is the line's, end to end, and the class, surface, grade and tread width are the forest's own entries where it publishes them - a forest that publishes the centreline alone has none. The trailheads and the points along the way are the Service's recreation points, and the write-ups its own recarea text, unedited. Heights come from USGS 3DEP through Terrain Tiles on AWS (Mapzen/Tilezen), read along each line and rounded; a short trail on steep ground can be off by a few tens of feet. Closures change: check the forest's own site before you go.