Aberdeen loop

The Aberdeen loop offers a truly immersive mountain biking experience through the high-desert landscape of Hartman Rocks. You'll encounter a mix of technical singletrack, slickrock, and exhilarating flow sections, all set against a backdrop of rolling sagebrush and striking granite rock formations. The route provides incredible 360-degree views, allowing you to take in the vastness of the Gunnison Basin and the majestic San Juan Mountains in the distance, creating a remote and wild atmosphere.

Before you head out, remember that trails in this part of Hartman Rocks, including the Aberdeen loop, are subject to seasonal closures from March 15 to May 15 for Gunnison Sage-grouse conservation. This difficult 15.9-mile (25.6 km) trail involves 1723 feet (525 metres) of elevation gain and typically takes around 4 hours and 7 minutes to complete, so plan your day accordingly and bring plenty of water. Parking is available within the Hartman Rocks Recreation Area.

What makes the Aberdeen loop stand out is its combination of diverse terrain and the unique geological features of the Hartman Rocks area, including the historic Aberdeen Quarry. It's a demanding ride, particularly with its longer climbs on the west side, making it ideal for experienced mountain bikers looking for a significant challenge and a true taste of Colorado's high-desert riding.