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Comment by shrx | original | Longest Straight Line Paths on Water or Land on the Earth (2018)
[−]shrx · 2026-08-30 Sun 10:34 UTC · link
Wikipedia has an article listing some of the notable (walking) straight line missions: https://en.wikipedia.org/wiki/Straight_line_mission

edit: and the article already notes this longest possible path from Portugal to China, citing a 2023 article: https://bigthink.com/strange-maps/these-are-the-worlds-longe...

[−]fhars · 2026-08-30 Sun 11:59 UTC · link
Note that the 2023 article also cites the submission, which is five years older.