UN 13,015 (formerly UN 13,020 interpolated) near Maroon Lake and Willow Pass has been determined to be no longer a ranked summit per Lidar evaluation, which gives it 292 ft. of prominence. This has reduced the total number of ranked 13ers from 584 to 583.
While Dyer Mountain may easily be reached by a strolling, Class 2 ridge walk from Mount Sherman, a more interesting route exists on the west side of the range by driving in from Leadville. The West Ridge route to the summit offers some Class 3 scrambling and the start is still accessible to passenger vehicles. The overall route may still be completed in just a few hours since there is no lengthy approach hike. The overall mileage from the east side & hiking over Mt. Sherman will be significantly longer than the hike from the Leadville side. See both routes and separate trailheads below.