Entity

Marathon Petroleum Company LP is a Delaware limited partnership, the principal operating subsidiary of Marathon Petroleum Corporation (NYSE: MPC) headquartered in Findlay, Ohio, and ranks as the largest petroleum refining and marketing organization in the United States with a total crude distillation capacity of approximately 3.0 million barrels per day across 13 refineries. The company operates two of the five largest refineries in the country — the ~631,000 bpd Galveston Bay complex in Texas City, Texas, and the ~597,000 bpd Garyville refinery in Louisiana — alongside a geographically diversified system spanning the Gulf Coast, Midwest, West Coast, and Rockies. Its asset base, assembled through the 2013 acquisition of BP's Texas City refinery and the transformative $23 billion acquisition of Andeavor in 2018, is complemented by an extensive branded marketing network operating under the Marathon^® and ARCO^® banners serving roughly 7,500 retail locations, and a growing renewable fuels business anchored by Martinez Renewables, the largest renewable diesel facility in the United States, operated as a joint venture with Neste. As the named operating entity on the system's refinery permits and regulatory filings, Marathon Petroleum Company LP constitutes the operational core of the consolidated Marathon Petroleum enterprise, whose midstream logistics are separately held through the sponsored master limited partnership MPLX LP.

Historical Development

• Pre-2011: Operated as the downstream organization of Marathon Oil Company, including the 1998–2005 Marathon Ashland Petroleum LLC joint venture

• 2011: Downstream assets placed under Marathon Petroleum Company LP upon the spin-off of Marathon Petroleum Corporation

• 2013: Acquisition of BP's Texas City refinery and associated terminals (~$2.5 billion)

• 2018: Absorption of Andeavor (Tesoro and Western Refining) assets, doubling system scale

• 2021: Speedway divestiture; Dickinson renewable diesel startup

• 2023: Martinez renewable diesel facility reaches full capacity

Refining System (~3.0 million bpd, 13 refineries)

Mega-Refineries

• Galveston Bay

  (Texas City, TX): ~631,000 bpd — largest in system; formed by integrating the former BP Texas City refinery (acquired 2013) with the legacy Marathon Texas City refinery; physical integration completed 2018

• Garyville

  (Garyville, LA): ~597,000–606,000 bpd — deep conversion with delayed coking; consistently among the U.S. top five

Core Refineries

• Los Angeles

  (Carson/Wilmington, CA): ~363,000 bpd — largest West Coast refinery, CARB-compliant fuels

• Catlettsburg

  (Catlettsburg, KY): ~300,000 bpd — inland refinery with sweet/sour flexibility

• Robinson

  (Robinson, IL): ~253,000 bpd — Midwest core, Canadian crude access

• Detroit

  (Detroit, MI): ~140,000 bpd — heavy/sour configuration processing Canadian crude

• El Paso

  (El Paso, TX): ~131,000 bpd — acquired via Andeavor/Western Refining

• Anacortes

  (Anacortes, WA): ~119,000 bpd — Pacific Northwest

• St. Paul Park

  (St. Paul Park, MN): ~105,000 bpd — northern tier, Canadian crude

• Mandan

  (Mandan, ND): ~71,000 bpd — Bakken-linked

• Salt Lake City

  (Salt Lake City, UT): ~68,000 bpd — Rockies market

Renewable & Converted Sites

• Martinez, CA:

  Former ~157,000 bpd crude refinery converted to renewable diesel (Martinez Renewables, 50/50 JV with Neste); ~730 million gallons/year capacity since 2023

• Dickinson, ND:

  Renewable diesel conversion completed 2021; ~184 million gallons/year

Marketing & Brand

• Marathon^®:

  ~6,000+ branded locations across the Midwest, Southeast, Gulf Coast, and East Coast

• ARCO^®:

  ~1,400+ locations on the West Coast and Southwest, acquired through the Andeavor transaction

• Business model:

  Predominantly branded wholesale supply to independent dealers and jobbers; company-operated retail exited via the 2021 Speedway divestiture to 7-Eleven ($21 billion)

• Terminals:

  Extensive light-products terminal network supporting the marketing footprint