Last updated Friday, August 14, 2026
This might be the question I get most from newer readers, and the maps apps are no help with it. The short answer: the trail network inside Ken Caryl Ranch is private, and three excellent county parks sit right next door, free and open to everyone. Here's where the line actually runs.
The trails, overlooks, and campsites inside the Ranch belong to the Ken-Caryl Ranch Master Association, and the association's own description is plain about it: a private trail system for residents, who are required to wear an Open Space ID bracelet so rangers and volunteer patrollers can identify authorized users. Guests are welcome only when accompanied by a bracelet-wearing resident. So if a friend who lives in the Valley invites you along, great. Otherwise, parking at a Ranch trailhead and heading uphill will earn you a conversation with a ranger, and this newsletter will not be able to help you.
All three of these are Jeffco Open Space parks: free, no pass, open to hikers, and each one within a few minutes of the zip.
Deer Creek Canyon Park, trailhead at 13388 Grizzly Drive. The big one. Hikers and equestrians get several trails to themselves, including Meadowlark, Homesteader, and Golden Eagle. Mountain bikers come for The Wall, a steep rocky pitch on Plymouth Creek Trail, and the 2.5-mile Red Mesa Loop. The county's own page carries a standing rattlesnake warning, and it's earned. Go early in summer.
Hildebrand Ranch Park, trailhead at 9880 Deer Creek Canyon Road. The mellow counterpart. A nearly five-mile loop on the Two Brands Trail with gentle grades running in the shadow of the hogbacks. This is the one I point people to for a first ride or a long dog walk.
South Valley Park, trailheads at 12447 Deer Creek Canyon Road and 8354 South Valley Road. Red sandstone spires and the most dramatic scenery-per-step in the area, on trails suited to beginning mountain bikers and hikers who prefer level ground. It's strictly an on-trail park. The formations erode easily, so no climbing on them, and the northwest section is closed to the public to protect nest sites.
Black Bear Trail connects Deer Creek Canyon and Hildebrand Ranch into one continuous ride, with a catch worth memorizing: it closes every year from February 1 through July 31 for nesting raptors. It reopened August 1, so the through-ride season is on now.
Chatfield State Park, 11500 North Roxborough Park Road. The reservoir, miles of paved and dirt trail, and the area's fenced off-leash dog area. State park pricing applies: a daily vehicle pass runs 12 to 17 dollars, walking in is 4 dollars, and the off-leash area takes its own pass at 3 dollars a day or 25 a year for a handler and up to three dogs. Dogs elsewhere in the park stay leashed.
South Platte Park, along the river in Littleton with the Carson Nature Center at its heart, is free, and its calendar of ranger programs shows up in the newsletter's events section all summer.
As of mid-August: the Upper Plymouth Creek stretch at Deer Creek Canyon closes Monday through Thursday, 8 to 4:30, for trail work, which interrupts Black Bear through-rides on weekdays, so plan the full loop for Friday through Sunday. Up Bear Creek Canyon, the Bear Creek Trail at Lair o' the Bear has been closed since August 3 for flood-damage repair, with the county expecting to wrap by late August. And unincorporated Jeffco remains under a Stage 2 fire ban.
Closures move week to week, and re-checking them every Friday is literally my job: the free Friday newsletter carries a Trail Report in every issue. For what's being built around the trails, see What's Going In There?, our development tracker.
If I've got something wrong here, or your favorite public trail is missing, tell me: [email protected].
Your weekly guide to Littleton, Ken Caryl, and the SW Denver foothills. Events, restaurants, trails, development news, and the stuff your neighbors are talking about.