County Road 104 is a hiking, biking, and horse trail in Weld County, Colorado. It is within Pawnee National Grassland. It is 7.9 miles long and begins at 5,209 feet altitude. Traveling the entire trail is 15.9 miles with a total elevation gain of 589 feet. The Prairie View School (elevation 5,207 feet) school is near the trailhead.