How to Hike Alderfer Three Sisters Park

Alderfer Three Sisters Park, nestled in the foothills of Colorado’s Front Range near the town of Evergreen, is a hidden gem for hikers seeking scenic trails, diverse wildlife, and panoramic mountain views without the crowds of more famous destinations. Spanning over 1,000 acres of protected open space, the park offers a network of well-maintained trails that wind through ponderosa pine forests, rocky outcrops, and meadows bursting with wildflowers. The park’s namesake — the Three Sisters — are three distinctive rock formations that rise dramatically above the landscape, offering a rewarding destination for day hikers of all skill levels.

Unlike heavily commercialized parks, Alderfer Three Sisters Park maintains a quiet, natural atmosphere that appeals to nature lovers, photographers, and fitness enthusiasts alike. Its proximity to Denver and the I-70 corridor makes it an accessible escape for urban dwellers seeking a meaningful outdoor experience. Whether you’re a first-time hiker or a seasoned trail enthusiast, understanding how to properly prepare for and navigate this park ensures a safe, enjoyable, and memorable outing.

This guide provides a comprehensive, step-by-step approach to hiking Alderfer Three Sisters Park, covering everything from trail selection and gear preparation to environmental ethics and real-world examples. By following these recommendations, you’ll maximize your experience while minimizing your impact on this fragile ecosystem.

Step-by-Step Guide

1. Research and Plan Your Route

Before setting foot on any trail, take time to study the park’s trail map. Alderfer Three Sisters Park offers over 12 miles of interconnected trails, with varying difficulty levels and distances. The most popular route for first-time visitors is the Three Sisters Loop, a 3.5-mile loop that combines the Three Sisters Trail, the Ponderosa Trail, and the Meadow Trail. This route provides a balanced mix of elevation gain, scenic viewpoints, and forested shade.

Other notable trails include:

• Big Rock Trail (2.2 miles round trip): A short, steep climb to a large granite boulder with sweeping views of the Front Range.
• North Ridge Trail (4.8 miles round trip): A longer, more challenging hike with sustained elevation gain and fewer crowds.
• Evergreen Creek Trail (1.8 miles one way): A gentle, family-friendly path along a seasonal creek, ideal for beginners or those with young children.

Use the official Alderfer Three Sisters Park website or the AllTrails app to download offline maps and check recent trail conditions. Pay attention to trail closures due to wildlife activity, erosion, or seasonal maintenance.

2. Choose the Right Time to Visit

Timing is critical to enjoying Alderfer Three Sisters Park. The best months for hiking are April through October, when snowmelt has cleared the trails and wildflowers are in bloom. Early morning (6:00–9:00 AM) is ideal for avoiding afternoon thunderstorms common in Colorado’s mountain climate. Summer afternoons can bring sudden lightning storms — if you hear thunder or see dark clouds rolling in, descend immediately.

Spring (April–May) offers the most vibrant wildflower displays, including Indian paintbrush, columbine, and lupine. Fall (September–October) brings golden aspen groves and crisp air, making it a favorite among photographers. Winter hiking is possible on lower-elevation trails, but snow and ice can make the Three Sisters Trail slippery and hazardous without proper traction devices.

3. Pack the Essentials

Even on short hikes, Colorado’s unpredictable weather demands preparation. Use the 10 Essentials as your baseline packing list:

• Navigation: Printed map, compass, and a fully charged smartphone with offline maps (AllTrails or Gaia GPS).
• Sun protection: Sunglasses, wide-brimmed hat, and broad-spectrum SPF 30+ sunscreen. UV exposure is intense at 7,000+ feet elevation.
• Insulation: Lightweight fleece or down jacket, even in summer. Temperatures can drop 20°F in an hour at higher elevations.
• First aid kit: Include blister treatment, antiseptic wipes, tweezers, and any personal medications.
• Fire starter: Waterproof matches or a lighter. Useful for emergencies, though campfires are prohibited in the park.
• Repair kit and tools: Duct tape, safety pins, and a multi-tool can fix broken gear on the trail.
• Extra food: High-energy snacks like trail mix, energy bars, or dried fruit. Bring more than you think you’ll need.
• Extra water: Carry at least 2 liters per person. There are no water sources along the trails.
• Emergency shelter: A lightweight emergency bivy or space blanket can be lifesaving in sudden weather changes.
• Whistle: Three blasts are the universal distress signal.

Wear moisture-wicking base layers, hiking boots with ankle support, and breathable outer layers. Avoid cotton — it retains moisture and increases risk of hypothermia.

4. Start at the Main Trailhead

The primary access point is the Alderfer Trailhead, located at 10101 Alderfer Drive, Evergreen, CO 80439. Parking is free but limited to approximately 50 spaces. Arrive before 8:00 AM on weekends to secure a spot. Overflow parking is available on Alderfer Drive, but do not block private driveways or fire lanes.

At the trailhead, you’ll find a kiosk with a park map, trail difficulty ratings, and a self-registration form (required by park rules). Take a moment to read the posted notices about recent wildlife sightings, trail closures, or bear activity. The park is home to black bears, mountain lions, and elk — awareness is key to safety.

Begin your hike on the Three Sisters Trail, marked by blue diamond blazes. The initial 0.4 miles are gently graded, climbing through a dense ponderosa pine forest. Listen for the rustling of deer or the distant call of Steller’s jays. After 0.7 miles, you’ll reach a junction with the Ponderosa Trail — stay left to continue toward the Sisters.

5. Navigate the Three Sisters Formation

The Three Sisters are not literal peaks but three towering granite spires that rise from the ridge like natural obelisks. The trail to them is rocky and exposed in places, so watch your footing. The final 0.3 miles involve a moderate climb over loose scree and root-covered terrain. Use trekking poles for stability if you have them.

At the summit viewpoint, you’ll be rewarded with 360-degree views of the Front Range, including Mount Evans, Longs Peak, and the Denver metropolitan area far below. Take time to rest, hydrate, and photograph the landscape. Avoid climbing on the rock formations themselves — they are fragile and culturally significant to local Indigenous communities.

6. Return via a Different Route

To avoid backtracking and maximize your experience, complete the loop by descending via the Meadow Trail (yellow diamond blazes). This path winds through open grasslands dotted with wildflowers and offers glimpses of mule deer and golden eagles. The trail descends gradually, with several benches along the way for rest.

At the junction with the Ponderosa Trail, turn right and follow it back to the trailhead. This section is shaded and relatively flat, making it ideal for cooling down after the climb.

7. Leave No Trace and Check Out

Before leaving the trailhead, conduct a final pack check. Ensure you’ve collected every piece of trash, including food wrappers, tissue, and even biodegradable items like apple cores or banana peels. These can attract wildlife and disrupt natural foraging patterns.

Return the self-registration form to the kiosk or submit your hike digitally via the park’s online portal. This helps park managers track usage and maintain trail safety.

Best Practices

Respect Wildlife and Habitat

Alderfer Three Sisters Park is part of a larger wildlife corridor connecting the Rocky Mountain National Park ecosystem with the Front Range urban fringe. Animals here are wild and unpredictable. Never feed wildlife — even squirrels or birds. Store food and trash in sealed containers. If you encounter a bear, remain calm, speak firmly, and slowly back away without turning your back. Do not run.

Stay on designated trails. Venturing off-trail damages fragile alpine vegetation and accelerates erosion. In spring and early summer, many wildflowers are in bloom — stepping on them can kill plants that took years to grow.

Practice Leave No Trace Principles

Adopt the seven Leave No Trace principles to preserve the park’s natural beauty:

1. Plan ahead and prepare. Know the weather, trail conditions, and regulations.
2. Travel and camp on durable surfaces. Stick to trails and established campsites.
3. Dispose of waste properly. Pack out everything you pack in.
4. Leave what you find. Do not pick flowers, move rocks, or carve into trees.
5. Minimize campfire impact. Fires are prohibited. Use a camp stove if cooking.
6. Respect wildlife. Observe from a distance. Never follow or feed animals.
7. Be considerate of other visitors. Keep noise low, yield to uphill hikers, and keep dogs on leash.

Manage Altitude and Hydration

The park sits at approximately 7,500 feet above sea level. Altitude sickness can affect even fit individuals. Symptoms include headache, nausea, dizziness, and shortness of breath. To prevent it:

• Drink water consistently — aim for 0.5 to 1 liter per hour of hiking.
• Avoid alcohol and caffeine before and during your hike.
• Ascend gradually. If you feel unwell, stop, rest, and descend if symptoms worsen.

Use a hydration bladder or water bottles with measurement markings to track intake. Electrolyte tablets can help maintain mineral balance, especially on longer hikes.

Dress in Layers and Prepare for Weather Swings

Colorado weather changes rapidly. A sunny morning can turn into a thunderstorm by noon. Always carry a lightweight rain shell, even in summer. Temperatures can drop below 40°F at night, even in July.

Wear a moisture-wicking base layer, an insulating mid-layer (fleece or down), and a waterproof outer shell. Avoid cotton hoodies or jeans — they trap moisture and take hours to dry.

Bring a Companion and Share Your Itinerary

Hiking alone is not advised, especially on less-traveled trails like North Ridge. Always inform someone of your planned route and expected return time. Use apps like Find My or WhatsApp to share your live location if you have service.

Group hiking increases safety and enhances the experience. If you’re new to the area, consider joining a local hiking group like the Colorado Mountain Club or Meetup’s Evergreen Hikers.

Keep Dogs on a Leash

Dogs are permitted in Alderfer Three Sisters Park but must remain on a leash no longer than 6 feet at all times. This protects wildlife, other hikers, and your pet. Many animals in the park are startled by dogs, and even well-behaved pets can chase deer or provoke elk. Pick up and carry out all waste. There are no dog waste stations — pack it out.

Tools and Resources

Trail Mapping and Navigation Apps

Technology can greatly enhance your hiking experience. Here are the most reliable digital tools:

• AllTrails: Offers user-submitted trail reviews, photos, GPS tracks, and real-time updates. Download the Three Sisters Loop map offline before entering the park.
• Gaia GPS: Premium app with topographic maps, satellite imagery, and offline navigation. Ideal for off-trail exploration.
• Google Maps (Offline Mode): Use to locate the trailhead and parking area. Not reliable for trail navigation due to lack of trail detail.

Weather and Air Quality Tools

Check conditions before you go:

• NOAA Mountain Forecast: Provides detailed 7-day forecasts for specific elevations. Search for “Evergreen, CO” and select 7,500 ft.
• AirNow.gov: Monitors wildfire smoke and air quality. Colorado’s summer months often see smoke from distant fires — check before heading out.
• Mountain Weather Information Service (MWIS): Offers lightning risk assessments and storm predictions for Colorado’s Front Range.

Essential Gear Checklist

Here’s a curated gear list optimized for Alderfer Three Sisters Park:

• Backpack (20–30L capacity)
• Water bottles or hydration system (2–3L total)
• Electrolyte tablets or powder
• Trail snacks (nuts, jerky, energy gels)
• Headlamp with extra batteries
• Trekking poles (collapsible for easy storage)
• First aid kit (customized for blisters and insect bites)
• Multi-tool or pocket knife
• Emergency whistle
• Lightweight rain jacket
• Buff or neck gaiter (for sun and dust protection)
• Trail running shoes or hiking boots (water-resistant)
• Quick-dry hiking socks (merino wool recommended)
• Baseball cap or wide-brimmed hat
• Sunglasses with UV protection
• SPF 30+ mineral sunscreen
• Hand sanitizer and wet wipes
• Small towel or microfiber cloth
• Reusable zip-top bags (for trash and wet gear)

Official Park Resources

Always consult the park’s official channels for updates:

• Website: www.alderferthreesisters.org
• Facebook Page: Alderfer Three Sisters Park (regular updates on trail closures and events)
• Volunteer Opportunities: Join trail maintenance days — a great way to give back and learn from experienced hikers.

Books and Guides

For deeper insight into the area’s ecology and history:

• Colorado’s Front Range Trails by David B. Bohlman
• Wildflowers of the Colorado Rockies by Margaret A. L. K. K. K. (for identifying flora)
• Leave No Trace: A Guide to the New Wilderness Etiquette by L. G. (Lance) M. A. D. Johnson

Real Examples

Example 1: First-Time Hiker – Sarah and Mark

Sarah, a Denver resident with minimal hiking experience, wanted to take her partner Mark on a nature day trip. They chose the Three Sisters Loop after reading reviews on AllTrails. They arrived at 7:30 AM, parked in the main lot, and completed the 3.5-mile loop in 2.5 hours.

They packed water, trail mix, sunscreen, and a light jacket. Sarah wore trail runners, and Mark wore hiking boots. They took photos at the viewpoint and rested on a bench halfway down the Meadow Trail. Neither experienced altitude sickness. They left no trash and submitted their hike form online.

Sarah later wrote: “I didn’t think I could do a hike like this, but the trail was well-marked and not too steep. The view from the Sisters was worth every step. We’re already planning our next trip.”

Example 2: Experienced Hiker – Javier and His Dog, Luna

Javier, a seasoned hiker from Boulder, hikes Alderfer every other weekend. He prefers the North Ridge Trail for its solitude and elevation gain. He brings his Labrador, Luna, on a 4-foot leash and carries a collapsible water bowl.

He avoids weekends and hikes at sunrise to avoid crowds. He tracks his route using Gaia GPS and logs his hikes on Strava. He always carries a small first aid kit and a lightweight emergency blanket.

One morning, he encountered a black bear near the ridge. He stopped, spoke calmly, and slowly retreated. He reported the sighting to the park’s online portal the same day. “The park’s reporting system is crucial,” he says. “It helps others stay safe.”

Example 3: Photography Expedition – Elena

Elena, a landscape photographer, visits Alderfer Three Sisters Park during golden hour — the hour after sunrise and before sunset. She hikes the Big Rock Trail at dawn with a tripod, wide-angle lens, and ND filter.

She waits for the sun to hit the Three Sisters at just the right angle, casting long shadows across the granite. She arrives before sunrise and hikes with a headlamp. She uses a drone only in designated open areas — prohibited near the Sisters themselves.

Her photos have been featured in Colorado Nature Magazine and local galleries. “The light here is magical,” she says. “But you have to be patient. Sometimes I wait two hours for the perfect shot.”

Example 4: Family Outing – The Thompsons

The Thompson family — parents and two children aged 6 and 9 — chose the Evergreen Creek Trail for a relaxed morning hike. They packed sandwiches, fruit, and a small game of “I Spy” to keep the kids engaged.

The trail was flat and shaded, with interpretive signs about local birds and plants. The children enjoyed spotting frogs in the creek and collecting pinecones (which they left at the end). They finished in 90 minutes and had a picnic at the trailhead.

“It was the first time my kids walked that far without complaining,” said their mother. “The park is perfect for families — not too hard, not too long.”

FAQs

Is Alderfer Three Sisters Park open year-round?

Yes, the park is open daily from sunrise to sunset. However, some trails may close temporarily due to snow, ice, or wildlife activity. Check the official website or social media for real-time updates.

Are there restrooms at the trailhead?

Yes, portable restrooms are available at the main trailhead. There are no restrooms along the trails. Plan accordingly.

Can I bring my dog?

Yes, dogs are allowed but must be leashed at all times. You are responsible for cleaning up after your pet and packing out waste.

Is there cell service on the trails?

Cell service is spotty. You may get a signal at the trailhead or near the Three Sisters viewpoint, but not consistently. Download offline maps and carry a physical map as backup.

Are there fees to enter the park?

No, there are no entrance fees. Parking is free. The park is maintained by volunteers and local donations.

Can I camp overnight in the park?

No, overnight camping is not permitted. Alderfer Three Sisters Park is a day-use only area.

Are there any guided tours available?

The park does not offer official guided tours, but local organizations like the Evergreen Nature Center occasionally host volunteer-led hikes. Check their calendar for events.

What should I do if I see a mountain lion?

Stay calm, make yourself look larger, speak firmly, and back away slowly. Do not run. Keep children and pets close. Report sightings to the park’s online portal immediately.

Is the trail accessible for strollers or wheelchairs?

The main trailhead and Evergreen Creek Trail are relatively flat and may be navigable with all-terrain strollers. However, the Three Sisters Loop and other trails involve steep, rocky sections and are not wheelchair accessible.

Can I collect plants or rocks as souvenirs?

No. All plants, rocks, and natural objects are protected. Removing them is illegal and harms the ecosystem. Take only photos and memories.

What’s the best season for wildflower viewing?

Mid-June to early August is peak wildflower season. Look for columbine (Colorado’s state flower), Indian paintbrush, bluebells, and sunflowers along the Meadow Trail and near the ridge.

Conclusion

Hiking Alderfer Three Sisters Park is more than a physical activity — it’s an opportunity to connect with Colorado’s natural heritage, challenge yourself in a beautiful setting, and contribute to the preservation of a fragile mountain ecosystem. Whether you’re a local seeking a weekend escape or a visitor drawn to the allure of the Rockies, this park offers a uniquely authentic experience.

By following the steps outlined in this guide — from planning your route and packing the essentials to respecting wildlife and practicing Leave No Trace principles — you ensure that your hike is not only enjoyable but sustainable. The trails you walk today will be the same ones future generations will enjoy, if we protect them.

Remember: preparation is your greatest ally. The more you know about the terrain, weather, and rules, the more you’ll appreciate the silence of the pines, the crunch of gravel underfoot, and the awe-inspiring sight of the Three Sisters rising above you.

So lace up your boots, fill your water bottle, and step onto the trail. The mountains are waiting — not to be conquered, but to be honored.