The Coulson Gulch Trail to Ralph Price Reservoir hike is 6.5 miles out-and-back. It features shady forest by a creek, meadows with mountain views, and a view of a large reservoir at the end. The hike goes downhill on the way out, and uphill on the way back.
This 5.2-mile hike in Button Rock Preserve is only moderately strenuous. It follows alongside the North Saint Vrain Creek, passes two reservoirs and two dams, and meanders on a uphill loop that features great views of Ralph Price Reservoir and the surrounding mountainous area.