Where does San Martin Pipeline run?

San Martin Pipeline runs from Tierra del Fuego to Buenos Aires, crossing Argentina.

How long is San Martin Pipeline?

San Martin Pipeline is 4,590 km long.

How much gas can San Martin Pipeline carry?

San Martin Pipeline has a design capacity of 11.2 bcm/y. Where every segment of a project repeats the same figure it is counted once rather than summed.

Is San Martin Pipeline operating?

San Martin Pipeline is operating, having started in 1965.

Who owns San Martin Pipeline?

San Martin Pipeline is owned by Compañía de Inversiones de Energía SA (CIESA), Administración Nacional de la Seguridad Social (ANSES), New York Stock Exchange (NYSE) and 2 others, as recorded in the current tracker release.

Does San Martin Pipeline serve an LNG terminal?

San Martin Pipeline passes within 25 km of 4 tracked LNG terminals. Proximity is not proof of a physical connection; each match is listed with its distance and how it was made.

San Martin Pipeline, Argentina

Route

San Martin Pipeline runs from Tierra del Fuego to Buenos Aires. The map draws the tracked route and any LNG terminal within 25 km of it.

Loads about 250 kB of map code and the country outline file.

From: Tierra del Fuego
To: Buenos Aires
Start country: Argentina
End country: Argentina
Countries crossed: Argentina
Onshore / offshore: Not reported
Fuel: Gas
Region: Not reported
Route drawn on map: 2,768 km
GEM pipeline ID: P1248
Start year: 1965
GEM wiki page: gem.wiki

Segments

Each row is one row of GEM's pipeline file. Project-level figures repeated on every segment are counted once in the totals above.

Segment	Status	From → to	Length	Capacity	Diameter	Start	Route from
Whole pipeline	Operating	Tierra del Fuego → Buenos Aires	4,590	11.2	762 mm	1965	GEM's route file

Connected LNG terminals

Terminals whose coordinates fall within 25 km of this route, or whose name matches the pipeline. Proximity is not proof of a physical connection.

Terminal	Country	Import / export	Status	Distance	Matched by
TGS Puerto Galván LNG Terminal	Argentina	Export	Proposed	13 km	route proximity
Bahia Blanca GasPort FSRU	Argentina	Import	Idle	13.7 km	route proximity
Bahía Blanca FLNG Terminal	Argentina	Export	Mothballed	13.7 km	route proximity
Argentina LNG Terminal	Argentina	Export	Proposed	19.2 km	route proximity

Owners and operators

Stakes as reported by GEM per segment, merged across segments.

Owners

Parent companies

In the news

Recent headlines that name San Martin Pipeline. Matched by name, so it is approximate. Titles and links only; we store no article text.

See all tracked headlines.

Common questions

Generated from the same tracker fields as the tables above, so the two cannot disagree. Each answer stands on its own.

Where does San Martin Pipeline run?: San Martin Pipeline runs from Tierra del Fuego to Buenos Aires, crossing Argentina.
How long is San Martin Pipeline?: San Martin Pipeline is 4,590 km long.
How much gas can San Martin Pipeline carry?: San Martin Pipeline has a design capacity of 11.2 bcm/y. Where every segment of a project repeats the same figure it is counted once rather than summed.
Is San Martin Pipeline operating?: San Martin Pipeline is operating, having started in 1965.
Who owns San Martin Pipeline?: San Martin Pipeline is owned by Compañía de Inversiones de Energía SA (CIESA), Administración Nacional de la Seguridad Social (ANSES), New York Stock Exchange (NYSE) and 2 others, as recorded in the current tracker release.
Does San Martin Pipeline serve an LNG terminal?: San Martin Pipeline passes within 25 km of 4 tracked LNG terminals. Proximity is not proof of a physical connection; each match is listed with its distance and how it was made.

More gas pipelines in Argentina

Listed in name order among the 50 pipelines tracked in Argentina, so projects with the same name sit together. A browse aid, not a claim that they are alike.

In our rankings

Where this appears in the site's generated top lists. Each ranking page states its own method before its table.

Longest gas pipelinesRanked #46 of the 50 listed

Background on the technology and the terms used on this page.

LNG against pipeline gas
A pipeline delivers gas at lower cost than LNG over land up to roughly two to four thousand kilometres, beyond which liquefaction wins, and across any significant body of deep water LNG usually wins at any distance.
How LNG works
Liquefied natural gas is natural gas chilled to about minus 162 degrees Celsius, at which point it becomes a liquid roughly 600 times smaller than the gas, so it can be shipped where no pipeline runs.
Mtpa, bcm and cubic metres
LNG capacity is quoted in three incompatible units, and the two conversions that matter are 1 million tonnes a year equals about 1.36 billion cubic metres of gas a year, and 1 cubic metre of liquid equals about 600 cubic metres of gas.
What terminal status actually means
A project status describes how far an LNG terminal or train has progressed, and the gap between proposed and operating is the single most misread number in the industry.

Cite this page

Reuse is welcome; please name the page and the tracker release it draws on.

Reference

LNG Atlas. (2026). San Martin Pipeline, Argentina. https://lngatlas.org/pipeline/san-martin-pipeline-ar/ Data: Global Gas Infrastructure Tracker, Global Energy Monitor, November 2025, CC BY 4.0.

BibTeX

BibTeX entry

@misc{lngatlaspipelinesanmartinpipelinear2026,
  author = {{LNG Atlas}},
  title = {San Martin Pipeline, Argentina},
  year = {2026},
  url = {https://lngatlas.org/pipeline/san-martin-pipeline-ar/},
  note = {Data: Global Gas Infrastructure Tracker, Global Energy Monitor, November 2025, CC BY 4.0},
}