Armstrong and Spiro Loop Trail

The full loop, as mapped, is approximately 9.6 kilometers (6 miles) and generally takes around 2 hours and 53 minutes to complete. However, variations exist; some longer routes can take significantly more time depending on your pace and chosen extensions.

The Armstrong section of the trail features a consistent, moderate uphill grade, which many find quite pleasant and manageable. The Spiro section, while offering a dynamic descent, is also generally considered moderate. While it involves significant elevation changes, its well-maintained path makes it a do-able challenge for those with some hiking experience. For beginners, the Armstrong Trail alone might be a good starting point before attempting the full loop.

The trail offers diverse terrain. The Armstrong Trail is known for its remarkably constant and moderate uphill grade, mostly shaded by aspen trees. The Spiro Trail provides a somewhat steeper descent on buttery-smooth single track, winding through aspens and crossing ski runs. You'll encounter switchbacks, especially on the descent, and potentially some mining ruins along the way.

You'll be treated to beautiful scenery throughout, including dense aspen groves that provide ample shade. Highlights include the Armstrong Trail itself, a stunning View of Park City, the serene First Valley Meadow, and another scenic Viewpoint on Armstrong Trail. During the fall, the aspens turn vibrant golds and oranges, creating a particularly picturesque experience.

Yes, the route effectively connects various trails. After reaching the top of Armstrong, it connects with a short segment of the Mid Mountain Trail before transitioning to Spiro. The loop also passes through sections of the Armstrong, H.A.M., and Seldom Seen trails.

Yes, dogs are generally allowed on the trails within Park City Mountain Resort, including the Armstrong and Spiro Loop Trail. However, they must be kept on a leash at all times. Please remember to pack out any waste to keep the trails clean for everyone.

The trail is best enjoyed from late spring through fall. The summer months offer ample shade from the trees, making it a good option for warmer days. Fall is particularly spectacular due to the vibrant colors of the changing aspen leaves. While not explicitly closed, winter conditions can make hiking challenging or impossible due to snow and ski operations.

No, there are no specific permits or entrance fees required to hike the Armstrong and Spiro Loop Trail. It is part of the public trail network accessible from Park City Mountain Resort. However, always be mindful of any resort-specific regulations or closures, especially during ski season or special events.

The trail is easily accessible from Park City. Many hikers start near the base of Park City Mountain Resort. Parking is available in designated lots around the resort area. Due to its popularity, especially on weekends, arriving earlier in the morning or later in the afternoon is recommended to secure parking and avoid peak crowds.

Due to its popularity and easy access from Park City, the trail can get quite busy, especially on weekends and during peak summer and fall months. For a more serene experience, consider hiking mid-week or during morning and evening hours.

Given the moderate difficulty and elevation changes, wear comfortable hiking shoes with good grip. Layers are advisable as temperatures can vary, especially with the shaded sections and open views. Bring plenty of water, snacks, sun protection (even with shade), and a map or GPS device. Don't forget your camera for the scenic views!