Castle Rock opened Lost Canyon Ranch Open Space to the public on Monday, July 13, 2026, and it's the largest piece of open space the Town has ever bought. I went out and hiked all the open trails over two days in July. As of late September, every planned trail on the property is finished, and I went back on Oct. 10 to hike the last two.
The basics
Lost Canyon Ranch Open Space is 716 acres on the southeast edge of town, pressed up against Castlewood Canyon State Park, and all 15 miles of planned trail are open. When I first hiked it in July, 10 miles were open and the last 5, including Golden Eagle Loop and Rustler's Ridge Loop, were still under construction. The Town's parks and trails team, @crparksrec, announced on Sept. 28, 2026 that Rustler's Ridge Loop, the last piece, was finished: "With the recent completion of Rustler's Ridge Loop at Lost Canyon Ranch Open Space, all trails have now been completed and are open to the public! That's a total of approximately 15 miles of trail to explore!" I went back and hiked both new loops, Golden Eagle first and then Rustler's Ridge, on Saturday, Oct. 10, 2026, and my distance, elevation, shade and trail notes for each are in the trail list below.
The ground runs from rolling grassland to mature mixed coniferous forest to hoodoo rock formations and dramatic canyon cliffs, all of it wrapped around the wide Lost Canyon, carved out by Willow Creek as it cuts through the property. The Town's Assistant Parks Director, Jeff Smullen, put it this way to a Denver Gazette reporter: "There's nothing like it in the Town of Castle Rock. It's like the mountains in Town."
Read this before you drive out there
No dogs. No horses. No pets of any kind, anywhere on the property. This is a ban, not a leash rule. If you show up with your dog, you're turning around. Take them to Castlewood Canyon State Park next door instead, where leashed dogs and service animals are welcome. You can't walk your dog in to Castlewood from Lost Canyon, either; drive over to the state park.
A few more things, and they aren't boilerplate:
- There's no drinking water on site. Bring more than you think you need. I hiked in the heat both days, around 85 degrees, and most of these trails have little shade.
- Cell service is limited, and the paper trail maps at the trailhead can run out (they were all gone one of the days I went). Pick your route before you lose signal.
- Rattlesnakes are active out here. That's the Town's warning, and I'm not just repeating a sign: I've seen rattlesnakes on this property myself.
- Bikes are allowed on the roadways only, never on the trails. Park them at the racks at either trailhead.
- Portable restrooms are at both trailheads. Cattleman's has a hand-wash station; Creekside has only hand sanitizer.
The trails, easiest to hardest
On the Town's map, the trails are color-coded loops linked by shorter connectors. The Town rates most of them moderate to difficult, and only calls out Pronghorn and Willow Creek as easy. Distances below are the Town's official numbers. Elevation is my own, measured on an Apple Watch. I haven't seen it published anywhere else, but if you have better numbers, let me know.
One thing to know before the list. There are only two parking lots, Creekside and Cattleman's, but several trails don't start at either one. You reach them by walking a connector trail first, and a few of those connectors are the hardest part of the whole outing. The pull up to Turkey Track gains about 82 feet in a quarter mile. The one up to Gobbler's gains about 112 feet in 0.4 mile. The high ground around Golden Eagle and the Big Bear overlook sits roughly 170 feet above the lot. The loops themselves are easy to moderate once you're on them; the work is often just getting to them.
| Trail | Distance | Elevation gain | Difficulty (Town) | Difficulty (me) | Shade |
|---|---|---|---|---|---|
| Pronghorn Path | 0.6 mi | ~30 ft | Easy | Easy | None |
| Willow Creek Path | 0.6 mi | ~36 ft | Easy | Easy | A little |
| Echoes of Ancestors | 0.8 mi | ~117 ft | Moderate | Easy | A little |
| Turkey Track Loop | 0.6 mi | ~38 ft | Moderate | Moderate | Some |
| Gobbler's Pass | 1.1 mi | ~111 ft | Moderate | Moderate | Some |
| Golden Eagle Loop | 1.8 mi | ~86 ft on the loop (200+ ft with the climb up from Creekside) | Not posted | Easy, once you're up there | Little to none |
| Rustler's Ridge Loop | 2.2 mi | ~177 ft | Not posted | Moderate | A lot |
| Lost Moccasin | 0.8 mi | ~170 ft | Difficult | Hard | Some |
| Big Bear Hollow | 1.7 mi | ~190 ft | Difficult | Hard | Some |
| Bootlegger's Loop | 2.6 mi | ~300 ft | Difficult | Hard | Some |
I sorted by how hard each trail actually feels, not by the elevation number, so a gradual 117 feet like Echoes lands easier than a short, steep pull. Below is each one, in the order I would send you.
Pronghorn Path, the easy one at Cattleman's
The flattest, simplest walk out here, 0.6 miles. A short crusher-fines loop right at Cattleman's Trailhead, with wide-open views. It's genuinely easy. The catch is there's zero shade, so on a hot day it's a morning or evening walk.
Willow Creek Path, down along the creek
The valley trail, down along the creek, surfaced in crusher fines like Pronghorn. It stays low, roughly level with the lower Creekside lot. The Town calls it partially shaded; I didn't find much cover. It's the shortest route to the dam, which the Town flags as a good picnic spot.
Echoes of Ancestors, the walk into Castlewood
At 0.8 miles, lots of flat slickrock and open sky. This is the trail that ties into Castlewood Canyon State Park, by the new Wildcat Canyon Trail the park built along its western boundary, so you can string both parks into one hike. Per the Town, a Colorado State Parks pass is required to enter Castlewood no matter how you get there (CPW lists a $4 day pass for entry on foot). It's full sun most of the way, and you'll see the old ranch house and outbuildings from parts of it. It gains about 117 feet, but gradually across the whole trail, so it walks easier than the number looks, which is why I rank it easier than Turkey Track.
Turkey Track Loop, easy loop, but you climb to reach it
The loop itself is 0.6 miles, short and mostly flat, and easy once you're on it. The catch is getting there: the connector up from the Creekside lot climbs about 82 feet in a quarter mile, a steady enough pull that my watch rated just that stretch moderate and my heart rate ran into the 140s. It also runs along the road and the neighborhood, so you'll see houses. The western portion has very little tree cover, with a bit more shade on the other parts.
Gobbler's Pass, and the step-through-the-rocks spot
At 1.1 miles, this one feels similar to Turkey Track. You get some shade, but you're not entirely protected, and you'll see houses off the western edge. The highlight is a genuinely cool spot where the trail steps through the rocks. Same note as Turkey Track: the loop is pleasant, but you climb about 112 feet from the Creekside lot to reach it, so factor the approach in.
Golden Eagle Loop, the high ground
The Town lists it at 1.8 miles, and my watch came in at 1.78. It sits up on the open slickrock and caprock, the highest ground I recorded anywhere on the property, topping out around 6,635 feet. The loop itself only moves about 86 feet between its low and high points: it starts high, drops into the middle and climbs back out at the end. Getting up there is the real climb, since the high ground sits roughly 170 feet above the Creekside lot, so plan on 200-plus feet of total climbing for the outing. It isn't hard. Once you're up there it's an easy walk; the work is the road up. There's little to no shade, and for a lot of it you can see the homes to the north in the background. The shade it does have is where I found two mule deer bucks bedded down under the pines.
To get up there, you walk the road from the bottom. Partway up there's a bench at an overlook looking down on Willow Creek, and in early October the trees down along the creek were turning yellow and orange. It isn't a named trail, just a spot on the road, but it's worth the stop.
Rustler's Ridge Loop, the shady one with the squeeze
The Town lists it at 2.2 miles, and my watch read 2.20 exactly. It's the last trail the Town finished, and it feels nothing like Golden Eagle: there's much more shade, through ponderosa pine and oak that was turning color when I went. With the trees, it reminded me of Big Bear Hollow or Bootlegger's. It climbs steadily to about the halfway point and then comes back down, roughly 177 feet of vertical, from about 6,445 to 6,622 feet. It isn't crazy, just moderate. The one thing to watch out for is the skinny spot.
It starts right off the Creekside parking lot and runs through the rock formations in the southwest corner of the property.
The highlight is a narrow slot where the trail squeezes between two big boulders. It's a tight squeeze.
Lost Moccasin, the staircase
This 0.8-mile trail is home to what the Town calls the property's signature 39-step stone staircase. Coming west to east, you climb it, and it will get your attention. The trail gains about 170 feet.
Big Bear Hollow, the overlook
If you do one view, do this one. Big Bear Hollow carries one of the property's premier overlooks, with sweeping views to the north and east across the forest and canyon. One thing to know: it's an out-and-back, not a loop. The overlook is a dead-end spur, so you either return the way you came or continue out through the open Golden Eagle connector. The Town lists it at 1.7 miles one way, so plan on roughly double for the round trip, and it's a real climb.
Bootlegger's Loop, the long one
The biggest single trail, 2.6 miles, looping between the two trailheads with about 300 feet of cumulative climbing. It has some rock steps and a bit of cliff exposure on the west side, and a steep finish. If you want the most trail in one go, this is it.
My review: the routes I would actually put together
If you want my honest picks, here is how I would spend a visit instead of just ticking off loops.
My favorite outing, and the harder one: from Creekside, take Gobbler's Pass up to the Golden Eagle connector, over to Big Bear Hollow and the overlook, then up the Lost Moccasin stairs and down the far side to Bootlegger's, and out along Bootlegger's back to the car at Creekside. It's essentially the Town's own 'most challenging' route, which they clock at about 5.5 miles.
If you want something easier but more eventful than Pronghorn, two options:
- Willow Creek Path up to Big Bear Hollow and the overlook. You start low along the creek and climb to the view. Take it out-and-back, or keep going for a fuller loop.
- The short connector road, about a third of a mile, from the bottom up to the Golden Eagle area, then your pick: the west side of Gobbler's, or over to Big Bear Hollow and the overlook.
The two trailheads and parking
Creekside Trailhead is the first lot you reach, and it holds only 19 cars. It's closest to Turkey Track Loop, Gobbler's Pass, Willow Creek Path, Big Bear Hollow, and the lower end of Bootlegger's.
Cattleman's Trailhead is farther east, up the road past Creekside, and holds 125 cars. It's closest to Pronghorn Path, Echoes of Ancestors, Lost Moccasin, and the upper end of Bootlegger's.
Creekside's 19 spaces are going to be nothing on a weekend morning or evening. And right now, new and busy as it is, even Cattleman's can fill up. If both lots are full, you can start from Castlewood Canyon State Park next door and cross in on the Wildcat Canyon–Echoes of Ancestors connection. Castlewood has far more parking, but you'll need a Colorado State Parks pass ($4 on foot) to enter, and it's a longer hike in.
Where it is and how to get there
6581 Lost Canyon Ranch Road, Castle Rock, CO 80104, on the southeast edge of town, right up against Castlewood Canyon State Park. It isn't somewhere you stumble across. You have to go looking for it, and the last stretch is a residential road.
Here are the Town's own directions from I-25:
- Take the Plum Creek Parkway exit, Exit 181
- Turn east at the ramp and follow Plum Creek Parkway for 3 miles
- Turn right at the roundabout onto Ridge Road, continue 1/2 mile
- Turn left on Mikelson Boulevard, continue 1/4 mile
- Turn right on Lantern Trail, continue 1/2 mile
- Turn right on Lost Canyon Ranch Road, continue 1/4 mile
The road is nicely paved once you're through the entry gate, but the last stretch up to Cattleman's is gravel. Drive slowly, the entrance road runs past homes, and park only in designated areas.
Hours
- Summer (May 1 – Aug. 31): 5:30 a.m. to 9 p.m.
- Spring/Fall (Mar. 1 – Apr. 30, Sept. 1 – Oct. 31): 6:30 a.m. to 8 p.m.
- Winter (Nov. 1 – Feb. 28): 7 a.m. to 5:30 p.m.
Franktown Cave, and why you can't visit it
There's a nationally significant piece of history on this property, and you can't go to it, by design. Franktown Cave is one of Colorado's most important archaeological sites, a rock alcove with evidence of more than 8,000 years of Indigenous occupation. Its artifacts are curated at the University of Denver's Museum of Anthropology, and it's been on the National Register of Historic Places since 2006.
The cave is closed and protected by a buffer, its location is deliberately not published, and no open trail leads to it. The Town flags frequent rattlesnake activity there too. If you want to learn about the cultural sites, the sanctioned way is a guided outing through the Town's parks and trails program.
Before it opened
I got out onto this land in 2025, when it was still closed to the public. What sticks with me from that summer is the rattlesnakes. I ran into them out here more than once, which is why I don't treat the Town's warning as boilerplate. I didn't see a single one on my 2026 hikes, but I wouldn't bet on that holding.
Back then, buying a ticket was one of the few ways in. Get Outdoors Castle Rock ran a 2025 fundraising series called Discover Lost Canyon Ranch Open Space, and it wasn't cheap: Sunrise Yoga was $85 a head, held 6 to 8:30 a.m. at a private overlook, plus guided hikes, a full-moon hike, and stargazing at $30. They still run mornings out here, like a Beginner Bird Watching walk in May 2026.
Since July 13, 2026, it's free. You drive up and walk in.
How Castle Rock got it
The total cost was $15,009,432, and it took a coalition:
- Great Outdoors Colorado awarded a historic $3 million Centennial Grant in September 2023, the largest GOCO grant in Town history
- Douglas County provided $5.5 million from its voter-approved open space sales tax
- The Conservation Fund negotiated the purchase on the Town's behalf, from the former owner's estate
- Douglas Land Conservancy holds a permanent conservation easement that limits future use
The Conservation Fund acquired the property in April 2024 and sold it, along with its groundwater rights, to the Town in May 2024. The Town and the land-planning firm Wenk and Associates finished the master plan in 2025, and crews started building trails that fall.
With Lost Canyon Ranch, more than 6,900 acres, about one-third of Castle Rock's total land, is now preserved as open space.
Open space is one of the defining features of Castle Rock's quality of life. Lost Canyon Ranch Open Space reflects our community's commitment to preserving extraordinary places through long-term investment and strong partnerships so they can be enjoyed for generations to come.
— Mayor Jason Gray
There's also the 35-acre Guardian Angel property, on the southeast edge near Horse Thief Cave, that Town Council approved buying on Jan. 6, 2026 (up to $1.1 million, including its water rights). Per the Town's third-quarter 2026 project update, Castle Rock has now closed on that purchase, growing Lost Canyon Ranch to its current 716 acres and ending private access that had previously run through the property. The trail system is finished too: all 15 miles are now open.
Castle Rock's open space and trail investment, including Lost Canyon Ranch, is part of why the town topped WalletHub's 2026 ranking of Colorado's best small cities, even though that same ranking flagged quality of life as its weakest category.
How I put this together
I hiked Lost Canyon Ranch myself over two days in July and tracked every trail that was open at the time on an iPhone, an Apple Watch, and Strava. I went back on Oct. 10, 2026 for Golden Eagle Loop and Rustler's Ridge Loop and tracked both on the Apple Watch. Every photo in this guide is one I shot on the property myself. The distances here are the Town's official numbers. The elevation, shade, and trail-feel notes are my own first-hand measurements and observations. Fair warning: I took a wrong turn or two, and I stopped constantly for photos, so my raw mileage ran long and my phone died before sunset. For exact trail distances, trust the Town's map, not me.
Been to Lost Canyon Ranch? Spot something I got wrong, or have a photo to share? Email me, I update this guide as readers weigh in.
Go see it
Hours, trailhead parking and directions are also on our Lost Canyon Ranch Open Space page. For the official Lost Canyon Ranch trail map (the Town's current version is dated Sept. 17, 2026), download it from the Town before you go, since cell service is limited and the paper maps at the trailhead can run out. More at CRgov.com/LostCanyonRanch.
Bring water. Leave the dog.
Sources: Town of Castle Rock announcement; Lost Canyon Ranch Open Space project page; Town of Castle Rock Lost Canyon Ranch trail map and fact sheet (map creation date Sept. 17, 2026, all 15 miles); the Town's Lost Canyon Ranch FAQ; Castle Rock Town Council records, January 2026; @crparksrec, Sept. 28, 2026 (Rustler's Ridge Loop completion); @crparksrec, Oct. 9, 2026 (Rustler's Ridge trailhead, Jeff Smullen quote); Town of Castle Rock, Third Quarter 2026 Major Projects Update, Oct. 6, 2026 Council agenda item (Guardian Angel property purchase). Distances from the Town; elevation, shade and trail conditions measured and observed first-hand by Connor Tien for DougCo Social, July and October 2026. Checked Oct. 10, 2026.