Outside 285 is a collaboration of agencies, wildlife advocates and recreation user groups working together to develop shared solutions for public lands planning in the US 285 corridor southwest of Denver. The focus of the multi-stakeholder collaborative is to conserve wildlife habitat while improving trail-based recreation experiences.

Outside 285 Planning Area

The Outside 285 planning area encompasses about 550,000 acres of public land across Clear Creek, Douglas, Jefferson and Park counties. 

Pressure on Our Public Lands

Since 2000, the Denver metropolitan region has grown by about 37% (790,000) and by 2040, the population is projected to increase by another 23% (693,000). Trail use has increased accordingly, resulting in crowding of popular areas, degradation of trails and infrastructure, increased conflict, increased pressure on wildlife, and an overall loss of solitude. These trends and issues were exacerbated by the COVID-19 pandemic, which resulted in significant increase in trail access and use. Given this context, the Outside 285 Partnership has convened a diversity of stakeholders to explore tactics for protecting wildlife habitat, encouraging responsible use, and improving trail-based recreation facilities.

The Outside 285 Partnership strives to:

  • FACILITATE meaningful collaboration around outdoor recreation and wildlife conservation

  • BUILD consensus among agencies, wildlife and recreation advocates

  • LOCATE desirable and critical habitat areas for protection

  • IDENTIFY opportunities for improved recreational amenities, access, and capacity

  • DEVELOP a system for trail maintenance and funding

  • PRODUCE planning documents to guide project decisions in the Outside 285 region

  • STRENGTHEN relationships and mechanisms for future project determinations

  • ENCOURAGE responsible use, equitable access, and outdoor ethics


Backcountry Hunters and Anglers • Bailey Hundo • Bureau of Land Management – Royal Gorge Field Office • Colorado Department of Transportation • Colorado Mountain Bike Association • Colorado Mountain Club • Colorado Parks and Wildlife Colorado • Colorado State Land Board • Colorado Trail Foundation • Colorado Wildlife Federation • Denver Water • Douglas County • Front Range Back Country Horsemen • Human Potential Running Series • Jefferson County Open Space • Mosquito Range Heritage Initiative • Mountain Area Land Trust • National Wild Turkey Federation • Park County • Rocky Mountain Bighorn Society • Rocky Mountain Elk Foundation • Salida Mountain Trails • South Platte Enhancement Board • Trout Unlimited • Upper South Platte Partnership • U.S. Forest Service – Pike National Forest, South Platte and South Park Ranger Districts • U.S. Forest Service – Arapaho National Forest, Clear Creek Ranger District • Wild Connections


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