ARCO is a brand of gasoline stations owned by Marathon Petroleum. BP, which formerly owned the brand, uses it in Northern California, Oregon and Washington, while Marathon has rights for the rest of the United States and Mexico.
At one time, ARCO had its headquarters in what is now the City National Plaza complex in Downtown Los Angeles
An ARCO filling station off Slauson Avenue in Los Angeles, California (2005)
An ARCO station in St. Clairsville, Ohio in 2021, well out of ARCO's traditional marketing territory and in the home state of Marathon.
Marathon Petroleum Corporation is an American petroleum refining, marketing, and transportation company headquartered in Findlay, Ohio. The company was a wholly owned subsidiary of Marathon Oil until a corporate spin-off in 2011.
Marathon Petroleum headquarters in Findlay, Ohio
The Marathon Petroleum campus.