Stio to open fifth Colorado store at Outlets at Castle Rock

Stio’s move to the Outlets at Castle Rock says a lot about where Douglas County retail still has momentum: a brand can still justify a new brick-and-mortar store when the location sits on one of Colorado’s busiest shopping corridors and already pulls in destination traffic from across the Front Range.

The Jackson, Wyoming-based outdoor company plans to open a 3,060-square-foot Mountain Studio at 5050 Factory Shops Blvd. by mid-May 2026. The Castle Rock store will be Stio’s 15th location nationwide and its fifth in Colorado, joining existing Mountain Studios in Boulder, Breckenridge, Steamboat Springs and Vail. Stio, founded in 2011, makes technical apparel and lifestyle pieces aimed at mountain athletes.

The new shop gives the brand a foothold inside Colorado’s largest outlet center, a property the Colorado Tourism Office describes as the state’s No. 4 tourist destination. The Outlets at Castle Rock says it has more than 100 brand-name stores, has added more than 25 new brands in the last two years and has held the title of Colorado’s Best Outlet Shopping since 2015. Its position off I-25 between Denver and Colorado Springs gives it a built-in advantage for impulse stops and planned shopping trips alike.

For Castle Rock, the addition reinforces the center’s growing outdoor-apparel cluster. Stio will join brands such as Columbia Sportswear and Arc’teryx, giving shoppers another premium option in a category that has become one of the outlet center’s most visible draws. That mix matters because it turns the center into more than a discount mall: it becomes a place where outdoor shoppers can compare technical gear, lifestyle clothing and higher-end mountain brands in one stop.

The timing also fits a broader retail shift in Douglas County. In a market where new store openings are never automatic, Stio’s choice suggests the outlet center still has enough foot traffic, regional reach and brand density to attract expansion-minded retailers. For Castle Rock, that means more activity at a property already positioned as a regional shopping destination, and another sign that the town’s retail base is still deepening rather than standing still.