Glacier Length Comparison (Kilometers)
Compare 12 glacier lengths in km, from the 52 km Hispar to the 400 km Lambert. Exact official NSIDC, NASA and USGS survey data in a linked converter tool.
Visual comparison
All values
Click any row to load it as Entry A.
| Name | Value | Context | Source |
|---|---|---|---|
| Hispar Glacier Shortest here at 52 km. Some lists give 49. | 52 kilometers | Pakistan Karakoram, Hispar Muztagh | Pakistan survey / NSIDC compilation: Hispar Glacier 52 km |
| Baltoro Glacier K2 trek at 63 km. | 63 kilometers | Pakistan Karakoram, K2 approach | Pakistan survey / NSIDC compilation: Baltoro Glacier 63 km |
| Malaspina Seward Wide lobe, trunk at 65 km. | 65 kilometers | USA Alaska, piedmont lobe | NSIDC photo collection: Malaspina Seward system 65 km trunk |
| Biafo Glacier Snow Lake system at 67 km. | 67 kilometers | Pakistan Karakoram, Snow Lake feed | Pakistan survey / NSIDC compilation: Biafo Glacier 67 km |
| Siachen Glacier NASA gives 75, most tables give 76. | 76 kilometers | Karakoram, second longest nonpolar | NASA Earth Observatory: Siachen Glacier 75-76 km |
| Fedchenko Glacier Britannica rounds near 70 km. | 77 kilometers | Tajikistan Pamirs, longest nonpolar | NASA Earth Observatory / JAXA EORC: Fedchenko Glacier 77 km |
| Shackleton Glacier Ross Ice Shelf feed at 96 km. | 96 kilometers | Antarctica Transantarctic outlet | USGS Antarctic survey: Shackleton Glacier 96 km |
| Hubbard Glacier Tidewater leader at 122 km. | 122 kilometers | USA Alaska Canada, longest tidewater | USGS / NPS: Hubbard Glacier 122 km |
| Beardmore Glacier Historic polar route at 160 km. | 160 kilometers | Antarctica Transantarctic, Scott route | USGS Antarctic survey: Beardmore Glacier 160 km |
| Bering Glacier NSIDC length leader outside Antarctica. | 196 kilometers | USA Alaska, longest by length | NSIDC Quick Facts: Bering Glacier 196 km longest |
| Lambert Glacier Longest here at 400 km. Some lists give 435 km. | 400 kilometers | East Antarctica, Amery Ice Shelf feed | Copernicus / USGS: Lambert Glacier 400 km from grounding line |
| Lambert Fisher System Full system with tributary reach. | 435 kilometers | East Antarctica, full ice stream | Australian Antarctic Division: Lambert Fisher system 435 km |
About this converter
Glacier trunks run 52 to 435 km in this table. Hispar at 52 and Baltoro at 63 open the short end. Malaspina Seward at 65 and Biafo at 67 follow. Siachen at 76 and Fedchenko at 77 form the nonpolar pair. Shackleton at 96, Hubbard at 122, Beardmore at 160 and Bering at 196 climb through polar outlets. Lambert at 400 and the full Lambert Fisher system at 435 close the long end. Every figure is a trunk length from NSIDC, NASA, USGS or national Antarctic programs. Area leaders differ from length leaders, so the table keeps length only.
How to use it
Pick two glaciers and a unit in the top row. The three boxes below stay linked. Change any box and the other two update. Try 1 Lambert Glacier against Siachen Glaciers to see the 400 to 76 gap in km or miles. Click any table row to load it as Entry A with amount 1.
Values pin trunk length along the main flow line. Lambert lists 400 km from the grounding line in Copernicus and USGS pages, with 435 km for the full Fisher system in Australian tables, both rows kept with notes. Siachen lists 76 here with 75 in NASA text. Fedchenko lists 77 here with near 70 rounded in Britannica. Bering at 196 is the NSIDC length leader outside Antarctica. Area totals stay out because length is the topic.
FAQ
Which glacier is longest here?
Lambert Fisher system at 435 km. Lambert trunk alone is 400 km.
How long is Siachen Glacier?
76 km in most tables. NASA text gives 75 km for the same trunk.
What is the longest nonpolar glacier?
Fedchenko at 77 km in the Pamirs, just past Siachen at 76 km.
Do area and length agree?
No. Seller and Malaspina lead by area but sit shorter by trunk length, so this table keeps length only.
Sources
- NSIDC Quick Facts Bering Glacier 196 km; NSIDC Malaspina Seward collection
- NASA Earth Observatory Siachen 75 km and Fedchenko 77 km; JAXA EORC Fedchenko 77 km
- USGS Antarctic surveys Beardmore 160 km and Shackleton 96 km; Copernicus Lambert 400 km
Last verified: 2026-10-07 · 12 entries
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