Deepest borehole
The current deepest borehole record is 40,230 ft, held by Kola Superdeep Borehole. Last checked October 14, 2026.
40,230
ft
Kola Superdeep Borehole
- Holder
- Kola Superdeep Borehole
- Record
- 40,230 ft
- Metric
- 12.26 km
- Exact figure
- 12,262 m
- Location
- Murmansk Oblast, Russia
- Last checked
- October 14, 2026
Sources
- WorldAtlas The kola superdeep borehole
- Wikipedia Kola Superdeep Borehole CC BY-SA 4.0
- egu.eu Drilling in the deep
- scientificamerican.com How deep is the deepest hole in the world
- larepublica.pe Los ingenieros de la union sovietica perforaron kilometros en la corteza terrestre y se toparon con algo que no esperaban
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