The Tonopah Test Range The Tonopah Test Range (TTR) is a 525 square mile area (625 square miles according to new information...it apparently expanded) located at the very north end of the Nellis Complex, about 32 miles southeast of Tonopah, Nevada. The primary (paved) access is off of Hwy 6 at the north end of the facility. Dirt road access points also exist on the south and east sides of the ...