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The Longest Straight-Line Path on Earth: How the 32,089 km Route Without Touching Land Was Calculated

Aug 31, 2026·3 min

The Longest Straight-Line Path on Earth: How the 32,089 km Route Without Touching Land Was Calculated

How long is the longest straight-line path on Earth? The 32,089 km sea route from Pakistan to Kamchatka and the 11,241 km land route from Lianyungang to Lisbon were found using great circle paths and branch and bound algorithms.