North Fork Trail (CO)

Jefferson County, Colorado, United States

18.4 miles (29.5 km) · 2,411 ft elevation gain · Loop · trail · Route

North Fork Trail (CO) covers 18.4 miles across Jefferson County, Colorado, United States. Runners face 2,411 feet of climbing with 2,356 feet of loss. The longest climb spans 4.0 miles with 732 feet of gain. Elevation gain averages 133 feet per mile. The course is 81% runnable, with the remainder requiring hiking on steep or technical sections. Trail comprises the majority of the course. The course features very hilly terrain. The course difficulty of 12.1 puts it in the top 28.64% of challenging routes at this distance. Popular among trail runners and hikers seeking Colorado adventures.