July is a mesmerizing time to be above treeline in Colorado. This holds especially true for the Eagles Nest Wildnerness in the state’s northern mountains, notably the Gore Range, pictured here. Local trail runners hold sacred a 13-mile loop around Buffalo Mountain that takes you through some of the most ridiculous wildflower fields on earth. It’s not easy – you start with a 5-mile, 2,800-foot climb. But you emerge from the forest into this idyllic alpine scene. Not recommended for anyone allergic to the color purple.