Trails · State Forest State Park
Ruby Jewel Trail
A short, steep climb into a glacial cirque to a jewel of an alpine lake tucked below Clark Peak.
Toggle Terrain / USGS Topo / Satellite / Street (top-right) · route © COTREX/CPW · tap a marker for waypoints
Ruby Jewel is the payoff at the end of a long approach: a 1.3-mile dirt footpath that leaves the top of the rough Ruby Jewel Road and climbs west into a high glacial cirque in the Medicine Bow Range. This is State Forest State Park country — wild, quiet, and a world away from the crowds on the Front Range — and the trail keeps its promise the whole way, gaining steadily through spruce and fir toward the granite headwall that cradles the lake. COTREX lists it as open to hikers, mountain bikes, and horses; leashed dogs are welcome too.
The trail ends at Ruby Jewel Lake, a small tarn sitting in the shadow of Clark Peak — at 12,951 feet the highest summit in the Medicine Bows — where snowfields can linger into midsummer and the water holds that cold, glassy alpine clarity. It's a real high-country destination, so come prepared for thin air, fast-changing weather, and afternoon thunderstorms, and check current road and trail conditions with State Forest State Park before you go. A Colorado State Parks pass is required to enter the park.
Trail Facts
Length
1.3 mi
Elevation
10,370 → 11,270 ft
Elevation Gain
+910 ft
Type
Trail
Uses
Hike · Bike · Horse
Bikes
Allowed
Stock / Horse
Allowed
Dogs
On leash
Surface
Dirt
Manager
State Forest State Park
Getting There
Ruby Jewel Lake sits in the northeast corner of State Forest State Park, off CO-14 west of Cameron Pass near Gould. From the park roads, follow the Ruby Jewel Road — a rough, high-clearance/4WD route — to its end; the footpath begins where the road quits. A Colorado State Parks pass is required. Confirm the road and trailhead on the map and check current conditions with the park before heading up.
| 0.0 mi | Ruby Jewel Trailhead — end of the Ruby Jewel Road (4WD) |
| 1.3 mi | Ruby Jewel Lake — below Clark Peak |
Know Before You Go
- Open to hike, bike & horse. COTREX has it open to hikers, mountain bikes, and horses; motorcycles and ATVs are not allowed on the trail itself.
- Dogs on leash. Leashed dogs are welcome — keep them close in this high, wildlife-rich basin.
- State park rules apply. Ruby Jewel is inside State Forest State Park — a Colorado State Parks pass is required to enter, and it's managed by the park, not the Forest Service.
- High-country conditions. This is a glacial cirque below Clark Peak; snow can linger into summer and storms build fast — check current road and trail conditions with the park before you go.
Take the Trail With You
Load the route onto your phone's GPS app, or print the details for the glovebox.
Coming soon — the Red Feather Lakes Trail App: offline maps and live GPS for every local trail, right in your pocket.
Built by Many Hands — Give a Little Back
Love this guide? Wear it. Every hat, tee, and cozy layer in our Red Feather Lakes collection helps us keep mapping trails and keeping this guide free — mountain apparel designed right here in the high country, with more trail gear on the way.
Shop the Collection →These trails don't tend themselves either. Every mile is watched over by volunteers and public stewards we lean on to bring you this guide — if you love these mountains, please pitch in for them too:
- Poudre Wilderness Volunteers — trail patrols & the official trail description Donate →
- Colorado Parks & Wildlife / COTREX — the mapped trail route & statewide trail data Donate →
- Arapaho & Roosevelt National Forest (USFS) — the public land itself Support →
- OpenStreetMap contributors — the Street basemap Donate →
- Google & USGS — trailhead location, ratings & topographic maps
Trail details compiled by the Red Feather Lakes Travel Guide from the sources above. Photography by us — more of our own trail images coming as we hike them.

