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Hiking trails & Routes
United States
Arizona
Coconino County
Flagstaff

Observatory Mesa Loop

Moderate

3.0

(30)

50

hikers

Observatory Mesa Loop

02:28

9.06km

140m

Hiking

Embark on the Observatory Mesa Loop, a moderate hike spanning 5.6 miles (9.1 km) with an elevation gain of 447 feet (136 metres). You can expect to complete this route in about 2 hours and 28 minutes. The trail quickly leads you into a peaceful forest filled with ponderosa pines, offering a serene escape. As you ascend, you'll encounter rocky sections and be rewarded with expansive views of Flagstaff, the Dry Lake Hills, and the majestic San Francisco Peaks. Look out for the "View of Elden from Anasazi Ridge" for a particularly striking panorama.

This route is easily accessible from Flagstaff, with convenient parking available close to the trailhead. It's a popular multi-use trail, so you will likely share the path with mountain bikers and trail runners. If you bring your dog, please keep them on a leash, especially in designated areas. The trail offers a blend of urban convenience and natural tranquility, making it a good option for a morning or afternoon outing.

The Observatory Mesa Natural Area provides a unique outdoor experience near Flagstaff, blending accessible nature with impressive vistas. Depending on the season, you might spot colorful wildflowers along the path, adding to the natural beauty. This loop is an excellent choice if you are looking for a rewarding hike that combines forest immersion with scenic overlooks, all within easy reach of the city.

Last updated: April 23, 2026

Waypoints

A

Start point

Parking

Get Directions

1

249 m

Karen Cooper Trailhead

Highlight • Trail

The Karen Cooper Trail leads you along the outskirts of Flagstaff, along the Rio de Flag and little parks.

Tip by

2

3.03 km

View of Elden from Anasazi Ridge

Highlight (Segment) • Viewpoint

The Karen Cooper Trail is part of the Flagstaff Urban Trail System and passes right below the Anasazi Ridge neighborhood. There is a head-on view of Elden Mountain from the path. If heading north from here on the trail, be aware that there is a trail intersection coming up in just a couple hundred yards.

Tip by

B

9.06 km

End point

Parking

Loading

Way Types & Surfaces

Way Types

4.40 km

3.16 km

1.22 km

213 m

< 100 m

Surfaces

3.37 km

2.85 km

1.53 km

983 m

331 m

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Elevation

Elevation

Nothing selected – click and drag below to see the stats for a specific part of the route.

Highest point (2,250 m)

Lowest point (2,110 m)

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Weather

Powered by Foreca

Today

Tuesday 7 July

32°C

13°C

16 %

Additional weather tips

Max wind speed: 21.0 km/h

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Frequently Asked Questions

Where can I park to access the Observatory Mesa Loop trail?

The trail is easily accessible from Flagstaff. A common starting point is the Karen Cooper Trailhead, which typically offers parking. Since the trail is close to a neighborhood, it provides convenient access to the natural area.

Is the Observatory Mesa Loop trail dog-friendly?

Yes, the trail is dog-friendly. However, please ensure your dog is leashed, especially in certain areas, to protect wildlife and ensure a pleasant experience for all trail users.

What is the best time of year to hike the Observatory Mesa Loop?

The trail offers a pleasant experience throughout much of the year. During spring and summer, you can enjoy colorful wildflowers. Fall brings beautiful foliage, and even winter hiking is possible, though conditions may vary. The forested sections provide good shade, making it enjoyable even on warmer days.

Are there any permits or entrance fees required for the Observatory Mesa Natural Area?

No, there are no specific permits or entrance fees required to access the Observatory Mesa Natural Area or to hike this trail. It's open for public enjoyment.

What is the terrain like on the Observatory Mesa Loop trail?

The terrain is varied, primarily consisting of singletrack. You'll find flatter sections transitioning into a steady, consistent climb to the top of Observatory Mesa. While generally smooth, expect some rocky areas. It's rated as moderate due to its length and elevation gain.

What kind of scenery and viewpoints can I expect on the trail?

The trail offers a unique blend of urban and natural views. You'll start near a neighborhood, then quickly enter a peaceful ponderosa pine forest. From the mesa's edge, you can enjoy expansive vistas of the San Francisco Peaks, the Dry Lake Hills, and the city of Flagstaff. Don't miss the View of Elden from Anasazi Ridge.

What wildlife might I encounter on the Observatory Mesa Loop?

The natural area is home to diverse wildlife. Keep an eye out for elk, mule deer, pronghorn, grey fox, porcupines, and various bird species like goshawks, owls, and bald eagles. Bats are also present in the area.

Is the trail suitable for families or beginners?

The Observatory Mesa Loop is generally considered moderate. While some shorter segments might be suitable for beginners, the full loop involves a consistent climb and varied terrain. It's a good option for families with some hiking experience, but not typically stroller-accessible due to rocky sections.

Does the Observatory Mesa Loop connect to other trails?

Yes, the Observatory Mesa Loop is an integral part of the larger 44-mile Flagstaff Loop Trail system. Along this route, you'll also find sections of the Flagstaff Urban Trail System, the Karen Cooper Trail, and the Mars Hill Trail (FUTS).

What makes the Observatory Mesa Loop unique compared to other trails in Flagstaff?

This trail offers a unique 'urban-remote' feel, providing a peaceful forest experience just minutes from the city. Its proximity to the Lowell Observatory and its role in protecting Flagstaff's dark skies add to its special character. It's also a multi-use trail popular for mountain biking, running, and horseback riding.

How long does it typically take to complete the Observatory Mesa Loop?

The full loop, which is approximately 9 kilometers (5.6 miles), typically takes around 2 hours and 30 minutes to complete at a moderate hiking pace. Shorter segments, like a 2-mile portion, can be done much quicker, around 12 minutes, but the full experience requires more time.

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