Outside Arizona, the National Old Trails Road ran from Washington, DC, to Los Angeles, California. The National Old Trails Highway Association also had plans to construct a new road through Lupton for a shorter more direct route to New Mexico. For a short time, the National Old Trails Road was partnered with a local auto trail known as the Ocean-to-Ocean Highway, which acted as an alternate route going from the National Old Trails Road to Phoenix and Yuma. Disagreements soon arose between the managers of both highways. The National Old Trails Highway Association preferred the main route be the highway to Topock, while the Ocean-to-Ocean Transcontinental Highway Association preferred the route to Yuma. Both organizations eventually ended their partnership and went in opposite directions.