Marathon Salt Lake City Refinery (Tesoro Refining & Marketing Company LLC)

Marathon Petroleum Corporation · Salt Lake City, UT

Operating PADD4 IRS refinery no. R-87-UT-0138

Aerial view of the site Imagery: USDA, USGS The National Map (public domain)

bpd crude capacity · EIA 2026: 70,000
pipelines it injects into · +1 same-city tariff origins: 1
delivery points reachable: 8
terminals on those points: 10
events on record: 3

Capability

Crude distillation 70,000 bpd operable, 70,000 operating (EIA-820, as of 2026-01-01). Downstream units below, barrels per calendar day.

Conversion — makes gasoline and diesel from heavier oil

Catalytic cracking (FCC)

27,100

Upgrading

Catalytic reforming — high pressure

10,900

Treating — meets sulfur specs

Hydrotreating — diesel	22,500 sd
Hydrotreating — gasoline	14,000 sd
Hydrotreating — naphtha / reformer feed	12,000 sd

Production capacity

Alkylates · 8,000 Sulfur short tons day · 16

Crude slate

Not independently confirmed this session; presumed blend of Wyoming/Rocky Mountain sweet crude and regional Uinta Basin waxy crude, consistent with the other Salt Lake Valley refineries.

Crude in & products out

Direction	Mode	Route	Point / origin	Products	Source
crude in	pipeline	Frontier Pipeline and SLC Pipeline A 2011 FERC order states that crude is delivered from the interstate pipelines of Frontier Pipeline Company and SLC Pipeline LLC into the Plains All American terminal near Salt Lake City. A 16-inch private spur line of about five miles runs from that terminal to the refinery's tank farm. The current SLC Pipeline tariffs name Salt Lake City, Utah as the destination and do not name the refinery.	Ranch Station and Wahsatch Station, the SLC Pipeline tariff origins for Salt Lake City	crude	source
crude in	pipeline	Chevron Pipe Line crude pipeline A 2011 FERC order states that crude is delivered from a Chevron Pipe Line Company interstate pipeline into the Chevron Products crude terminal in Salt Lake City. Two private crude spur lines, each under five miles, run from that terminal to the refinery's tank farm. The order's text does not give the origin of the Chevron line.		crude	source
crude in	truck	Uinta Basin crude trucking Inference based on general regional practice for Salt Lake Valley refineries; not confirmed specifically for this refinery this session.	Uinta Basin, UT	crude	inferred
products out	pipeline	Northwest Products Pipeline A 2011 FERC order states that two private spur lines, each under five miles, carry gasoline and diesel from the refinery to a products terminal near Salt Lake City, then owned by Chevron. From that terminal product moves on the interstate pipeline from Utah to Idaho and Washington. The connection is at the origin terminal, not at the plant.	Products terminal at the pipeline origin (tariff origin Salt Lake Station), reached over two private products spur lines from the refinery	gasoline distillate	source
products out	pipeline	Salt Lake Airport Pipeline System A 2011 FERC order states that product received into the terminal from the refinery is also routed to the Salt Lake City airport on a Utah intrastate pipeline. The order describes the two spur lines as carrying diesel and gasoline. It does not say how the refinery's jet fuel reaches the terminal.	Same products terminal at Salt Lake Station, reached over the two private products spur lines from the refinery		source
products out	truck rack	Tesoro Logistics Operations LLC Salt Lake City truck loading rack (T-87-UT-4202) The IRS terminal list carries the rack as Tesoro Logistics Operations LLC, T-87-UT-4202. Utah's Division of Air Quality permits the Truck Loading Rack and Remote Tank Farm at 475 West 900 North as a source separate from the refinery (notice of September 2024). Both the rack owner and the refinery owner are Marathon subsidiaries.	474 West 900 North, Salt Lake City, UT, next to the refinery		source

Pipeline reach

Pipeline	Injects at	Delivery points	Terminals	Lowest ¢/bbl	Median ¢/bbl
Tesoro Northwest Products Pipeline	Salt Lake Station per research	5	8	57.81	201.79
HF Sinclair / Holly Energy	Salt Lake City, UT (UNEV) same city Chevron refinery, UT same city	3	2	44.05	516.66

Substitutes

Other refineries injecting into the same pipelines — the supply that could backfill an outage here.

HF Sinclair / Holly Energy

Hf Sinclair El Dorado Refining LLC · El Dorado, KS 162,000 bpd
Hf Sinclair Navajo Refining LLC · Artesia, NM 110,000 bpd
Alon USA Energy INC · Big Spring, TX 73,000 bpd
Chevron USA INC · Salt Lake City, UT 54,720 bpd
Hf Sinclair Woods Cross Refining LLC · Woods Cross, UT 41,705 bpd

Tesoro Northwest Products Pipeline

Hf Sinclair Woods Cross Refining LLC · Woods Cross, UT 41,705 bpd
Silver Eagle Refining · Woods Cross, UT 15,000 bpd

Events

2024-02 turnaround
Multiunit turnaround of the South End section: 67 kb/d CDU shut Feb 14, ULSD hydrotreater Feb 12, plus ultraformer, distillate hydrotreater and flare gas recovery; about six weeks of work. source
2023-01 other
Intense ~30-minute flaring at the Salt Lake City refinery, described by Marathon as part of planned maintenance. source
2018-10-01 sale
Marathon Petroleum Corporation completed its acquisition of Andeavor (formerly Tesoro Corporation), which included the Salt Lake City refinery. This is outside the 'last ~2 years' window but is included because the graph's stored operator name for this facility is 8 years out of date. source

Rates are pipeline line-haul transcribed from published FERC tariffs; every figure cites its tariff and item. Cost to serve (netback) adds origin spot price and destination fees. "Confirmed" links match a tariff delivery point to the facility; "same city" means the point is in the facility's city — plausible, not proof; "per research" means the facility's research profile names the pipeline as an outlet.