Whitewater rivers near Iron Mountain Trail, Custer County, South Dakota Iron Mountain Trail Main Page List of nearby whitewater: Spearfish Creek, South Dakota, City Park to Evans Park, 43.8 miles away Laramie River, Wyoming, Tunnel Road to Palmer Canyon Road, 157.4 miles away Bluegrass Creek, Wyoming, Tunnel outlet to Highway 34, 159.4 miles away * Distances listed are direct linear distances, actual travel distance may be different. Go to South Dakota Outdoors Index