MPC is the nation's fourth-largest refiner, with a crude oil refining capacity of approximately 1.8 million barrels per calendar day in its seven-refinery system. Marathon brand gasoline is sold through approximately 5,600 independently owned retail outlets across 19 states. In addition, Speedway LLC, an MPC subsidiary, owns and operates the nation's second-largest convenience store chain, with approximately 2,760 convenience stores in 22 states. MPC owns, leases or has ownership interests in approximately 8,300 miles of crude and light product pipelines and 5,000 miles of gas gathering and natural gas liquids (NGL) pipelines. MPC also has ownership interests in 51 gas processing plants, 11 NGL fractionation facilities and one condensate stabilization facility. Through subsidiaries, MPC owns the general partner of MPLX LP, a midstream master limited partnership. MPC's fully integrated system provides operational flexibility to move crude oil, NGLs, feedstocks and petroleum-related products efficiently through the company's distribution network and midstream service businesses in the Midwest, Northeast, Southeast and Gulf Coast regions.