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How wide is the Pacific Ocean at its greatest extent?

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Map of the Pacific Ocean showing depth contours in varying shades of blue, major submarine features such as trenches, ridges, and basins labeled throughout the ocean, and neighboring landmasses including Asia, Australia, North and South America. Principal cities along the Pacific rim and island groups are marked, along with international boundaries.
Pacific Ocean

The Pacific Ocean reaches its greatest width at its latitudinal extent, measuring approximately 12,000 miles (about 19,000 km) along the 5° N parallel. This distance spans the region between the coasts of Colombia in South America and the Malay Peninsula in Asia.2