Trails · State Forest State Park
Kelly Lake Trail
A long, honest climb across the North Park side of State Forest State Park toward an alpine lake tucked below the Medicine Bow peaks.
Toggle Terrain / USGS Topo / Satellite / Street (top-right) · route © COTREX/CPW · tap a marker for waypoints
Kelly Lake Trail runs for the better part of seven miles across the western, North Park flank of State Forest State Park, stitched here from the connected segments COTREX maps under that one name. It starts low near a park road on dirt and short road-grade tread, then works steadily east and north through lodgepole and open parks, trading easy ground for a real mountain trail as it climbs toward the high country. Colorado Parks & Wildlife manages this ground, and it's open to a mix of users — hikers, mountain bikers, and horses share the route, with dogs welcome on leash.
The name points where the trail is headed: Kelly Lake itself, an alpine lake set in a cirque below the Medicine Bow peaks that crown the park's eastern skyline. This is a big day either way — bring layers, plenty of water, and time, and watch the afternoon sky for building weather up high. A State Forest State Park pass is required, and trail conditions and current closures are worth a check with the park office before you go.
Trail Facts
Length
6.9 mi
Elevation
8,620 → 10,860 ft
Elevation Gain
+2,250 ft
Type
Trail
Uses
Hike · Bike · Horse
Bikes
Allowed
Stock / Horse
Allowed
Dogs
On leash
Surface
Dirt
Manager
State Forest State Park
Getting There
Kelly Lake Trail lies inside State Forest State Park, on the North Park (west) side of Cameron Pass off CO-14. A State Forest State Park pass is required. Access is from within the park — confirm the trailhead and current road status on the park map, and check conditions with the park office before heading out.
| 0.0 mi | West trailhead / lower access near the park road |
| 6.9 mi | Upper end — toward Kelly Lake, below the Medicine Bow peaks |
Know Before You Go
- Shared-use trail. COTREX lists Kelly Lake Trail as open to hikers, mountain bikers, and horses — expect to meet other users and yield accordingly.
- Dogs on leash. Dogs are allowed but must be leashed on this route.
- Park pass required. This is State Forest State Park ground managed by Colorado Parks & Wildlife; you'll need a valid park pass.
- Check conditions. It's a long, high route toward an alpine lake — verify current trail status, snow, and closures with the State Forest State Park office 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.

