Item 2. Properties

See the detail below for the assets we own by segment. In addition, as of December 31, 2017, we were the lessee under a number of cancellable and noncancellable leases for certain properties, including land and building space, office equipment, storage facilities and transportation equipment. See Item 8. Financial Statements and Supplementary Data – Note 24 for additional information regarding our leases.

We believe that our properties and facilities are adequate for our operations and that our facilities are adequately maintained.

Refining and Marketing

The table below sets forth the location and crude oil refining capacity for each of our refineries, which include approximately 670 tanks with total tank storage capacity of approximately 60 million barrels, as of December 31, 2017.

Refinery		Crude Oil Refining Capacity (mbpcd)(a)
Galveston Bay, Texas City, Texas		571
Garyville, Louisiana		556
Catlettsburg, Kentucky		277
Robinson, Illinois		245
Detroit, Michigan		139
Canton, Ohio		93
Total		1,881

(a)	Refining throughput can exceed crude oil capacity due to the processing of other charge and blendstocks in addition to crude oil and the timing of planned turnaround and major maintenance activity.

The following table sets forth the approximate number of retail outlets by state where independent entrepreneurs maintain Marathon-branded retail outlets, as of December 31, 2017.

State		Number of Marathon® Retail Outlets
Alabama		268
District of Columbia		2
Florida		629
Georgia		284
Illinois		285
Indiana		647
Kentucky		573
Louisiana		15
Maryland		20
Michigan		814
Minnesota		39
Mississippi		94
New York		6
North Carolina		224
Ohio		862
Pennsylvania		69
South Carolina		110
Tennessee		401
Virginia		119
West Virginia		114
Wisconsin		42
Total		5,617

The following table sets forth details about our Refining & Marketing owned and operated terminals as of December 31, 2017.

Owned and Operated Terminals		Number of Terminals			Tank Storage Capacity (thousand barrels)			Number of Tanks			Number of Loading Lanes
Light Products Terminals:
Ohio		1			495			13			4
Wisconsin		1			351			8			4
Subtotal light products terminals		2			846			21			8
Asphalt Terminals:
Florida		1			132			3			3
Illinois		2			82			31			6
Indiana		2			424			19			6
Kentucky		4			549			52			14
Louisiana		1			54			8			2
Michigan		1			12			2			8
Ohio		4			1,491			48			13
Pennsylvania		1			494			12			8
Tennessee		2			483			38			8
Subtotal asphalt terminals		18			3,721			213			68
Total owned and operated terminals		20			4,567			234			76

The following table sets forth details about our railcars as of December 31, 2017.

		Number of Railcars
Class of Equipment		Owned			Leased			Total			Capacity per Railcar
General service tank cars		—			793			793			20,000-30,000 gallons
High pressure tank cars		—			921			921			33,500 gallons
Open-top hoppers		19			285			304			4,000 cubic feet
		19			1,999			2,018

Speedway

The following table sets forth the number of Speedway® convenience stores by state as of December 31, 2017.

State		Number of Convenience Stores(a)
Connecticut		1
Delaware		4
Florida		241
Georgia		4
Illinois		123
Indiana		311
Kentucky		147
Massachusetts		109
Michigan		305
New Hampshire		12
New Jersey		71
New York		235
North Carolina		277
Ohio		489
Pennsylvania		116
Rhode Island		19
South Carolina		52
Tennessee		42
Virginia		62
West Virginia		60
Wisconsin		64
Total		2,744

(a)	Includes stores with commercial fueling lanes.

Midstream - MPLX

The following tables set forth certain information relating to our crude and products pipeline systems and storage assets as of December 31, 2017.

Pipeline System or Storage Asset		Origin		Destination		Diameter (inches)		Length (miles)			Capacity(a)			Associated MPC refinery
Crude oil pipeline systems (mbpd):
Patoka, IL to Lima, OH crude system		Patoka, IL		Lima, OH		20”-22”		302			267			Detroit, Canton
Lima, OH to Canton, OH crude system		Lima, OH		Canton, OH		12"-16"		153			84			Canton
Catlettsburg, KY and Robinson, IL crude system		Patoka, IL		Catlettsburg, KY & Robinson, IL		20”-24”		484			515			Catlettsburg, Robinson
Detroit, MI crude system(b)		Samaria & Romulus, MI		Detroit, MI		16”		61			197			Detroit
Ozark crude system		Cushing, OK		Wood River, IL		22"		433			230			All Midwest refineries
Wood River, IL to Patoka, IL crude system(b)		Wood River & Roxana, IL		Patoka, IL		12”-22”		115			314			All Midwest refineries
St. James, LA to Garyville, LA crude system		St James, LA		Garyville, LA		30"		20			620			Garyville, LA
Inactive pipelines								45			N/A
Total								1,613			2,227
Products pipeline systems (mbpd):
Cornerstone products system		Cornerstone		Canton, OH		8"-16"		58			238			Canton
Garyville, LA products system		Garyville, LA		Zachary, LA		20”-36”		72			389			Garyville
Texas City, TX products system		Texas City, TX		Pasadena, TX		16”-36”		43			215			Galveston Bay
ORPL products system		Various		Various		4”-14”		876			368			Catlettsburg, Canton
Robinson, IL products system(b)		Various		Various		10”-16”		1,131			513			Robinson
Woodhaven, MI to Detroit, MI		Woodhaven, MI		Detroit, MI		4"		26			12			N/A
Louisville, KY Airport products system		Louisville, KY		Louisville, KY		6”-8”		14			29			Robinson
Inactive pipelines(b)								140			N/A
Total								2,360			1,764
Wood River, IL barge dock (mbpd)											78			Garyville
Storage assets (thousand barrels):
Tank Farms(c)											18,642			N/A
Caverns											2,755			N/A
Total											21,397

(a)	All capacities reflect 100 percent of the pipeline systems’ and barge dock’s average capacity in thousands of barrels per day and 100 percent of the available storage capacity of our caverns and tank farms in thousands of barrels.

(b)	Includes pipelines leased from third parties.

(c)	MPLX owns and operates 15 tank farms and operates two leased tank farms.

As of December 31, 2017, MPLX had partial ownership interests in the following pipeline companies.

Pipeline Company		Origin		Destination		Diameter (inches)		Length (miles)			Ownership Interest			Operated by MPL
Crude oil pipeline companies:
Bakken Pipeline system		Bakken/Three Forks area, North Dakota		Nederland, TX		30"		1,921			9.2	%		No
Illinois Extension Pipeline Company LLC		Flanagan, IL		Patoka, IL		24"		168			35	%		No
LOCAP LLC		Clovelly, LA		St. James, LA		48”		57			59	%		No
LOOP LLC (LOOP)(a)		Offshore Gulf of Mexico		Clovelly, LA		48”		48			41	%		No
Total								2,194
Products pipeline companies:
Explorer Pipeline Company		Port Arthur, TX		Hammond, IN		12”-28”		1,830			25	%		No
Louisville, KY to Lexington, KY(c)		Louisville, KY		Lexington, KY		8"		87			65	%		Yes
								1,917

(a) Excludes MPC’s 10% ownership interest in LOOP.

The following table sets forth details about MPLX owned and operated terminals as of December 31, 2017. Additionally, MPLX operates one leased terminal and has partial ownership interest in two terminals.

Owned and Operated Terminals		Number of Terminals			Tank Storage Capacity (thousand barrels)			Number of Tanks			Number of Loading Lanes
Light Products Terminals:
Alabama		2			443			16			4
Florida		4			3,422			65			22
Georgia		4			998			31			9
Illinois		4			1,275			34			14
Indiana		6			3,229			60			17
Kentucky		6			2,587			56			25
Louisiana		1			97			7			2
Michigan		8			2,440			73			26
North Carolina		4			1,509			34			13
Ohio		12			3,227			101			28
Pennsylvania		1			390			12			2
South Carolina		1			370			8			3
Tennessee		4			1,148			30			12
West Virginia		2			1,587			25			2
Total light products terminals		59			22,722			552			179

The following table sets forth details about barges and towboats as of December 31, 2017.

Class of Equipment		Number in Class			Capacity (thousand barrels)
Inland tank barges:(a)
Less than 25,000 barrels		62			942
25,000 barrels and over		170			4,985
Total		232			5,927
Inland towboats:
Less than 2,000 horsepower		2
2,000 horsepower and over		16
Total		18

(a) All of our barges are double-hulled.

The following tables set forth certain information relating to our gas processing facilities, fractionation facilities, de-ethanization facilities and natural gas gathering systems as of December 31, 2017, and include capacities and throughputs related to operated equity method investments on a 100 percent basis.

Gas Processing Complexes		Location		Design Throughput Capacity (MMcf/d)(a)			Natural Gas Throughput (MMcf/d)(b)			Utilization of Design Capacity(b)
Bluestone Complex		Butler County, PA		410			310			76	%
Houston Complex(c)		Washington County, PA		520			495			95	%
Majorsville Complex		Marshall County, WV		1,070			905			85	%
Mobley Complex		Wetzel County, WV		920			695			76	%
Sherwood Complex(d)		Doddridge County, WV		1,800			1,480			102	%
Cadiz Complex(e)		Harrison County, OH		525			509			97	%
Seneca Complex(e)		Noble County, OH		800			475			59	%
Kenova Complex(f)		Wayne County, WV		160			108			68	%
Boldman Complex(f)		Pike County, KY		70			32			46	%
Cobb Complex		Kanawha County, WV		65			24			37	%
Kermit Complex(f)(g)		Mingo County, WV		32			N/A			N/A
Langley Complex		Langley, KY		325			101			31	%
Carthage Complex		Panola County, TX		600			399			67	%
Western Oklahoma Complex		Custer and Beckham Counties, OK		425			373			88	%
Hidalgo System		Culberson County, TX		200			199			100	%
Javelina Complex		Corpus Christi, TX		142			112			79	%
Total				8,032			6,217			81	%

(a)	Centrahoma processing capacity of 280 MMcf/d and actual throughput of 243 MMcf/d, that exceeded MPLX’s 40 percent share of the capacity of 112 MMcf/d, are not included in this table as MPLX owns a non-operating interest.

(b)	Natural gas throughput is a weighted average for days in operation. The utilization of design capacity has been calculated using the weighted average design throughput capacity.

(c)	Approximately 35 MMcf/d of processing capacity at the Houston Complex was decommissioned during the first quarter of 2017 and will be replaced with 200 MMcf/d of processing capacity in 2018.

(d)	The Sherwood Complex is partially owned by Sherwood Midstream LLC (“Sherwood Midstream”), which MPLX accounts for as an equity method investment.

(e)	The Cadiz and Seneca Complexes are owned by MarkWest Utica EMG, L.L.C. (“MarkWest Utica EMG”), which MPLX accounts for as an equity method investment.

(f)	A portion of the gas processed at the Boldman plant, and all of the gas processed at the Kermit plant, is further processed at the Kenova plant to recover additional NGLs.

(g)	The Kermit processing plant is operated by a third party solely to prevent liquids from condensing in the gathering and transmission pipelines upstream of our Kenova plant. MPLX does not receive Kermit gas volume information but does receive all of the liquids produced at the Kermit Complex. As such, the natural gas throughput has been excluded from the total.

Fractionation & Condensate Stabilization Complexes		Location		Design Throughput Capacity (mbpd)			NGL Throughput (mbpd)(a)			Utilization of Design Capacity(a)
Bluestone Complex(b)(c)		Butler County, PA		47			19			40	%
Houston Complex(b)		Washington County, PA		60			61			102	%
Hopedale Complex(b)(d)		Harrison County, OH		180			134			77	%
Ohio Condensate Complex(e)		Harrison County, OH		23			13			57	%
Siloam Complex(f)		South Shore, KY		24			14			58	%
Javelina Complex		Corpus Christi, TX		11			8			73	%
Total				345			249			73	%

(a)	NGL throughput is a weighted average for days in operation. The utilization of design capacity has been calculated using the weighted average design throughput capacity.

(b)

The MPLX Houston, Hopedale and Bluestone Complexes have above-ground NGL storage with a usable capacity of 32 million gallons, large‑scale truck and rail loading. In addition, the Houston Complex has large‑scale truck unloading. MPLX also has access to up to an additional 50 million gallons of propane storage capacity that can be utilized in the Marcellus Shale, Utica Shale and Appalachia region under an agreement with a third party that expires in 2018. Lastly, MPLX has up to eight million gallons of propane storage with third parties that can be utilized in the Marcellus Shale and Utica Shale.

(c)	Includes 33 mpbd of de-propanization only capacity.

(d)

The MPLX Hopedale Complex is jointly owned by Ohio Fractionation Company, L.L.C. (“Ohio Fractionation”) and MarkWest Utica EMG. Ohio Fractionation is a joint venture between MarkWest Liberty Midstream & Resources, L.L.C. (“MarkWest Liberty Midstream”) and Sherwood Midstream (a joint venture between Markwest Liberty Midstream and Antero Midstream LLC). MarkWest Liberty Midstream and Sherwood Midstream are entities that operate in the Marcellus region, and Markwest Utica EMG is an entity that operates in the Utica regions. MPLX accounts for MarkWest Utica EMG and Sherwood Midstream as equity method investments.

(e)	The Ohio Condensate Complex as up to 7 million gallons of condensate storage. The Ohio Condensate Complex is partially-owned by MarkWest Utica EMG Condensate, L.L.C. MPLX accounts for Ohio Condensate as an equity method investment.

(f)

The MPLX Siloam Complex has both above-ground, pressurized NGL storage facilities, with usable capacity of two million gallons, and underground storage facilities, with usable capacity of 10 million gallons. Product can be received by truck, pipeline or rail and can be transported from the facility by truck, rail or barge. This facility has large‑scale truck and rail loading and unloading capabilities, and a river barge facility capable of loading barges up to 860,000 gallons.

De-ethanization Complexes		Location		Design Throughput Capacity (mbpd)			NGL Throughput (mbpd)(a)			Utilization of Design Capacity(a)
Bluestone Complex		Butler County, PA		34			15			63	%
Houston Complex		Washington County, PA		40			40			100	%
Majorsville Complex		Marshall County, WV		80			45			99	%
Mobley Complex		Wetzel County, WV		10			11			110	%
Sherwood Complex		Doddridge County, WV		40			30			75	%
Cadiz Complex(b)		Harrison County, OH		40			5			13	%
Javelina Complex		Corpus Christi, TX		18			12			67	%
Total				262			158			72	%

(a)	NGL throughput is a weighted average for days in operation. The utilization of design capacity has been calculated using the weighted average design throughput capacity.

(b)	The Cadiz Complex is owned by MarkWest Utica EMG, which MPLX accounts for as an equity method investment.

Natural Gas Gathering Systems		Location		Design Throughput Capacity (MMcf/d)			Natural Gas Throughput (MMcf/d)(a)			Utilization of Design Capacity(a)
Bluestone System		Butler County, PA		227			165			73	%
Houston System		Washington County, PA		1,178			839			74	%
Ohio Gathering System(b)		Harrison, Monroe, Belmont, Guernsey and Noble Counties, OH		1,123			766			70	%
Jefferson Gas System(c)		Jefferson County, OH		1,250			426			47	%
East Texas System		Harrison and Panola Counties, TX		680			444			65	%
Western Oklahoma System		Wheeler County, TX and Roger Mills, Ellis, Custer, Beckham and Washita Counties, OK		585			404			69	%
Southeast Oklahoma System		Hughes, Pittsburg and Coal Counties, OK		755			525			70	%
Eagle Ford System		Dimmit County, TX		45			30			67	%
Other Systems(d)		Various		60			9			15	%
Total				5,903			3,608			66	%

(a)	Natural gas throughput is a weighted average for days in operation. The utilization of design capacity has been calculated using the weighted average design throughput capacity.

(b)	The Ohio Gathering System is owned by Ohio Gathering Company, L.L.C., which MPLX accounts for as an equity method investment.

(c)	The Jefferson Gas System is owned by Jefferson Dry Gas, which is a joint venture between MarkWest Liberty Midstream and EMG MWE Dry Gas Holdings, LLC. MPLX accounts for Jefferson Dry Gas as an equity method investment.

(d)	Excludes lateral pipelines where revenue is not based on throughput.

The following tables set forth certain information relating to our NGL pipelines and crude oil pipeline as of December 31, 2017.

NGL Pipelines		Location		Design Throughput Capacity (mbpd)			NGL Throughput (mbpd)			Utilization of Design Capacity
Sherwood to Mobley propane and heavier liquids pipeline		Doddridge County, WV to Wetzel County, WV		75			60			80	%
Mobley to Majorsville propane and heavier liquids pipeline		Wetzel County, WV to Marshall County, WV		105			85			81	%
Majorsville to Houston propane and heavier liquids pipeline		Marshall County, WV to Washington County, PA		45			32			71	%
Majorsville to Hopedale propane and heavier liquids pipeline		Marshall County, WV to Harrison County, OH		140			69			49	%
Third party processing plant to Bluestone ethane and heavier liquids pipeline		Butler County, PA		32			8			25	%
Bluestone to Mariner West ethane pipeline(a)		Butler County, PA to Beaver County, PA		35			15			43	%
Houston to Ohio River ethane pipeline(b)		Washington County, PA to Beaver County, PA		57			9			16	%
Majorsville to Houston ethane pipeline(a)		Marshall County, WV to Washington County, PA		137			49			36	%
Sherwood to Mobley ethane pipeline		Doddridge County, WV to Wetzel County, WV		47			30			64	%
Mobley to Majorsville ethane pipeline		Wetzel County, WV to Marshall County, WV		57			41			72	%
Seneca to Cadiz propane and heavier liquids pipeline(c)		Noble County, OH to Harrison County, OH		75			16			21	%
Cadiz to Hopedale propane and heavier liquids pipeline(c)		Harrison County, OH		90			31			34	%
Seneca to Cadiz propane/ethane and heavier liquids pipeline(c)(d)		Noble County, OH to Harrison County, OH		69/82			1			1	%
Cadiz to Atex ethane pipeline(c)		Harrison County, OH		125			5			4	%
Cadiz to Utopia ethane pipeline(c)		Harrison County, OH		125			1			1	%
Langley to Siloam propane and heavier liquids pipeline(e)		Langley, KY to South Shore, KY		17			12			71	%
East Texas liquids pipeline		Panola County, TX		39			22			56	%

(a)	This pipeline is FERC-regulated.

(b)	This is the section of the Mariner West pipeline, which is FERC-regulated, leased to and operated by Sunoco Logistics Partners LP.

(c)	This pipeline is owned by MarkWest Utica EMG, which MPLX accounts for as an equity method investment.

(d)	This is the same pipeline from Seneca to Cadiz and can only be used for either ethane and heavier liquids or propane and heavier liquids at one time. Both throughput capacities are listed above, respectively, with ethane included in the total.

(e)	NGLs transported through the Langley to Ranger and Ranger to Kenova pipelines are combined with NGLs recovered at the Kenova facility. The design capacity and volume reported for the Langley to Siloam pipeline represent the combined NGL stream.

Crude Oil Pipeline		Location		Design Throughput Capacity (mbpd)			NGL Throughput (mbpd)			Utilization of Design Capacity
Michigan crude pipeline		Manistee County, MI to Crawford County, MI		60			10			17	%

Midstream - MPC-Retained Assets and Investments

The following tables set forth certain information related to our crude and products pipeline systems not owned by MPLX.

As of December 31, 2017, we owned undivided joint interests in the following common carrier crude oil pipeline systems.

Pipeline System		Origin		Destination		Diameter (inches)		Length (miles)			Ownership Interest			Operated by MPL
Capline		St. James, LA		Patoka, IL		40"		644			33	%		Yes
Maumee		Lima, OH		Samaria, MI		22"		95			26	%		No
Total								739

As of December 31, 2017, we had partial ownership interests in the following pipeline companies.

Pipeline Company		Origin		Destination		Diameter (inches)		Length (miles)			Ownership Interest			Operated by MPL
Crude oil pipeline companies:
LOOP(a)		Offshore Gulf of Mexico		Clovelly, LA		48”		48			10	%		No
Products pipeline companies:
Ascension Pipeline Company LLC		Riverside, LA		Garyville, LA		12"		32			50	%		No
Centennial Pipeline LLC(b)		Beaumont, TX		Bourbon, IL		24”-26”		796			50	%		Yes
Muskegon Pipeline LLC		Griffith, IN		Muskegon, MI		10”		170			60	%		Yes
Wolverine Pipe Line Company		Chicago, IL		Bay City & Ferrysburg, MI		6”-18”		743			6	%		No
Total								1,741

(a)	Represents interest retained by MPC and excludes MPLX’s 41% ownership interest in LOOP. Pipeline mileage is excluded from total as it is included with MPLX assets.

(b)	All system pipeline miles are inactive.

The following table provides information on private crude oil pipelines and private products pipelines that we own as of December 31, 2017.

Private Pipeline Systems		Diameter (inches)		Length (miles)			Capacity (mbpd)
Crude oil pipeline systems:
Inactive pipelines				9			N/A
Products pipeline systems:
Illinois pipeline systems		4”-8”		118			39
Texas pipeline systems		8”		103			45
Inactive pipelines				7			N/A
Total				228			84

The following table sets forth details about the assets held by two ocean vessel joint ventures in which we hold a 50% interest as of December 31, 2017.

Class of Equipment		Number in Class			Capacity (thousand barrels)
Jones Act product tankers(a)		4			1,320
750 Series ATB vessels(b)		3			990

(a)	Represents ownership through our indirect noncontrolling interest in Crowley Ocean Partners.

(b)	Represents ownership through our indirect noncontrolling interest in Crowley Blue Water Partners.