Metropolitan and Micropolitan areas near Big I Grade, Owyhee County, Idaho Big I Grade Main Page HIGH QUALITY TOPO MAP, CLICK HERE More Information about Big I Grade, Owyhee County, Idaho Nearest metro area is Boise City-Nampa, Idaho Click here for more outdoors activities near Boise City-Nampa, Idaho General Camping Information List of nearby metros and micros: Boise City-Nampa, Idaho, 49 miles away Ontario, Oregon-Idaho, 51.4 miles away Mountain Home, Idaho, 83.6 miles away Elko, Nevada, 137.2 miles away La Grande, Oregon, 140.2 miles away Twin Falls, Idaho, 164.8 miles away Pendleton-Hermiston, Oregon, 201.5 miles away * Distances listed are direct linear distances, actual travel distance may be different. Go to Idaho Outdoors Index