Fowler, Goshawk Ridge, and Spring Brook North Loop

Parking is available at the Fowler Trailhead, which is a common starting point for this loop. The trail is part of the City of Boulder Open Space and Mountain Parks system, so be aware of any specific parking regulations or fees that may apply.

This loop is generally considered to be of moderate difficulty. While sections like the Fowler Trail are easier, the Goshawk Ridge Trail involves a steady, moderate climb and requires sure-footedness. The total distance is approximately 6.9 km with about 252 meters of elevation gain.

Rules for dogs on trails within the City of Boulder Open Space and Mountain Parks (OSMP) can vary. Generally, dogs are allowed but must be on a leash unless they have an OSMP Voice and Sight Tag. Always check the latest regulations on the City of Boulder website before you go.

The trail is located within the City of Boulder Open Space and Mountain Parks. While there isn't typically an entrance fee for the trails themselves, certain areas or activities might require permits. For example, the Goshawk Ridge Trail is within the Eldorado Mountain Habitat Conservation Area, where hikers must stay on designated trails unless they have a special permit. Always consult the City of Boulder Open Space and Mountain Parks website for the most current information on permits and regulations.

Spring and fall are excellent times to hike this loop, offering pleasant temperatures and vibrant scenery. In spring, you'll see abundant wildflowers. Summer can be hot, so an early start is recommended. Winter conditions can vary, with potential for snow and ice, especially on shaded or higher sections.

The loop offers diverse terrain, transitioning from prairie to shrubs and then into forests. You'll encounter forest paths, open meadows, and sections following a historic 1890s railroad grade. The path includes both wide, well-maintained areas and singletrack sections, with some rocky parts, particularly near the red sandstone cliffs.

You'll be treated to dramatic red sandstone cliffs, with opportunities to watch rock climbers on formations like The Bastille. The trail provides expansive vistas of Eldorado Canyon, the Front Range peaks, the Continental Divide, Eldorado Mountain, and Shirttail Peak. The Spring Brook Loop North section offers views across the plains to the Flatirons.

Yes, this loop connects to other trails, allowing for various extensions or shorter routes. Specifically, the route also passes through sections of the Spring Brook Loop North Trail, the Goshawk Ridge Trail, and the Fowler Trail.

This is a great place to spot wildlife. Keep an eye out for various bird species, deer, and other local fauna. Remember to maintain a respectful distance and never feed wild animals.

The overall moderate difficulty means some sections might be challenging for very young children or those not accustomed to hiking. The Fowler Trail portion is generally easy, but the Goshawk Ridge Trail involves a steady climb. Consider your family's hiking experience when planning to tackle the full loop.

Yes, part of the trail follows an unfinished narrow-gauge railroad grade from the 1890s, offering a glimpse into the area's past. The Goshawk Ridge section also features an old railway cut and unique geological formations, including fossilized ripple marks.