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Alderfer/Three Sisters Open Space Park wilderness guide
Open Space Park · CO

Alderfer/Three Sisters Open Space Park

Alderfer/Three Sisters Open Space Park offers an inviting combination of towering rock formations and picturesque trails in the foothills of Evergreen, Colorado.

Open Space Park1,1284+ Trails

Designation

Open Space Park

Total Wilderness Area

1,128

Elevation / Terrain

Diverse Wilderness

Field Editorial Guide

About Alderfer/Three Sisters Open Space Park

Alderfer/Three Sisters Open Space Park offers an inviting combination of towering rock formations and picturesque trails in the foothills of Evergreen, Colorado.

Wilderness Landscape & Natural Heritage

Alderfer/Three Sisters Open Space Park is located just outside Evergreen, Colorado, and covers approximately 1,128 acres. The park is known for its unique geological formations, including the famous 'Three Sisters' rock piles and 'The Brother.' These recognizable landmarks provide stunning vistas and are popular with hikers and climbers alike. The ecosystem consists of a rich forested mix of ponderosa pine and mixed conifer species, offering habitat to a range of wildlife such as mule deer, elk, and several bird species. Historically, the area was used by early ranchers, and remnants of past agricultural activities can still be seen throughout the park. Several trails meander through this open space, accommodating a variety of recreational activities, including hiking, mountain biking, and horseback riding. The park is a popular spot for locals and tourists seeking a retreat into nature while remaining in proximity to Denver.

Field Guide · Open Space Park
Adventure Destinations

Notable Destinations Near Alderfer/Three Sisters Open Space Park

Scenic viewpoints, outdoor landmarks, and notable points of interest within 30 miles.

Waterfall Adventures: Maxwell Falls Lower Trail★ 8.3⌖ 3 miHiking
Maxwell Falls Lower Trail

Waterfall Adventures: Maxwell Falls Lower Trail

Explore Maxwell Falls Lower Trail near Evergreen, CO. This moderately challenging hike leads to a beautiful waterfall, perfect for wildlife viewing and photography. Best visited in spring and fall.

Waterfall and Woods at Maxwell Falls Trailhead, Conifer, CO★ 7.5⌖ 5 miHiking
Maxwell Falls Trailhead

Waterfall and Woods at Maxwell Falls Trailhead, Conifer, CO

Maxwell Falls Trailhead in Conifer, CO offers a moderate hike through pine forests to a photogenic waterfall. Best visited in spring and early summer for fuller flows and wildflowers. Popular for hiking, photography, and wildlife watching in a peaceful, quieter setting.

Waterfall Wonders at Clear Creek Canyon, Golden, CO★ 6.8⌖ 8 miHiking
Clear Creek Canyon Waterfall

Waterfall Wonders at Clear Creek Canyon, Golden, CO

Clear Creek Canyon Waterfall near Golden, CO offers a moderate hike with scenic views and creekside fishing. Enjoy accessible outdoor activities including rock climbing and local wildlife spotting. Best visited late spring to early fall for peak water flow and pleasant weather.

Rocky Mountain Wilderness in Morrison, Colorado★ 8.0⌖ 9 miHiking
Morrison

Rocky Mountain Wilderness in Morrison, Colorado

Explore the Rocky Mountain wilderness near Morrison, Colorado, offering striking rock formations and hiking opportunities. Easily accessible by car, this area features moderate trails and scenic views with opportunities for photography and wildlife spotting, best visited in spring or fall.

Hiking Adventure at Dakota Ridge Trailhead in Golden, Colorado★ 7.2⌖ 9 miHiking
Dakota Ridge Trailhead

Hiking Adventure at Dakota Ridge Trailhead in Golden, Colorado

Located just outside Golden, Colorado, Dakota Ridge Trailhead offers moderate hiking loops with rocky paths and great panoramic views. Ideal for hiking, biking, birdwatching, and photography, it’s a less crowded spot perfect for enjoying foothills nature and seasonal wildflowers.

Key Wilderness Highlights

✦ Three Sisters and The Brother rock formations✦ Diverse wildlife including deer and a variety of bird species✦ Scenic panoramic views from trails such as the Summit Trail✦ Networking of trails suitable for all levels of hikers
Wilderness Recreation

Outdoor Adventures in Alderfer/Three Sisters Open Space Park

Explore curated guides for top outdoor sports, trail networks, and wilderness activities.

Park Recreation

Hiking

Available in Alderfer/Three Sisters Open Space Park
Park Recreation

Mountain Biking

Available in Alderfer/Three Sisters Open Space Park
Park Recreation

Wildlife Viewing

Available in Alderfer/Three Sisters Open Space Park
Park Recreation

Photography

Available in Alderfer/Three Sisters Open Space Park
The Ranger Station

Visitor Logistics & Essential Planning

Everything you need to know about entrance passes, seasons, visitor centers, road transit, and wildlife safety in Alderfer/Three Sisters Open Space Park.

Passes & Fees

Entrance Requirements & Interagency Passes

Free access, no permits required

Wilderness Checklist

Carry paper topographic map & compass in remote zones.
Store all food and scented items in approved bear canisters.
Check wildfire / smoke advisories before backcountry departure.
Pack out everything you pack in (Leave No Trace).
Adventure Basecamps

Gateway Towns Near Alderfer/Three Sisters Open Space Park

Stay, dine, and gear up in these mountain towns and scenic basecamps surrounding the park.

Evergreen
⌖ 1.56 miles
Gateway Basecamp

Evergreen, Colorado

A quaint mountain town offering quick access to a range of outdoor activities in the Colorado Rockies.

Summer and FallExplore Town
Conifer
⌖ 7.77 miles
Gateway Basecamp

Conifer, Colorado

A peaceful mountain town offering diverse outdoor adventures with easy access to forests, lakes, and trails in the Colorado Rockies.

Late Spring through FallExplore Town
Morrison
⌖ 8.66 miles
Gateway Basecamp

Morrison, Colorado

A gateway town to stunning red rock landscapes offering diverse outdoor activities amidst mountain views and historic charm.

Spring through FallExplore Town
Golden
⌖ 11.07 miles
Gateway Basecamp

Golden, CO

Golden is an outdoor playground offering rugged foothills, river access, and vibrant trail networks just west of Denver.

Late Spring to Early FallExplore Town
Golden
⌖ 11.07 miles
Gateway Basecamp

Golden, Colorado

A vibrant hub for outdoor explorers seeking adventures in the foothills of the Rocky Mountains.

Spring and FallExplore Town
Pine
⌖ 11.67 miles
Gateway Basecamp

Pine, Colorado

A peaceful mountain town offering immersive nature experiences with easy access to hiking, mountain biking, winter sports, and serene forest landscapes.

Late Spring to Early Fall for hiking and biking; Winter for skiing and snowshoeingExplore Town
Expert-Led Wilderness Expeditions

Guided Experiences in Alderfer/Three Sisters Open Space Park

Explore scenic backcountry routes and epic wilderness adventures with certified local mountain guides, naturalists, and outfitters.

12 bookable experiences

Red RocksBoulder, Colorado · 8.07 mi away
All Adventures· The Hill Party Bus & The Boulder Lift

Red Rocks

Join a private guided tour of Boulder’s renowned Red Rocks with The Hill Party Bus & The Boulder Lift. Enjoy breathtaking views, insider stories, and personalized adventures in Colorado’s natural wonderland.

2–3 hours

Explore this trip

Availability, pricing, meeting details, and fulfillment are provided by the applicable operator or booking partner.