Mao Zedong’s Long March when the Red Army retreated was longer than you’d want to walk, most likely.
Especially while being bombarded by Chiang Kai-shek’s air force.
The Long March was a very long, slow retreat by the Chinese communist revolutionaries from southwest China to northeast China, in which they escaped encirclement and hiked 6,000 miles, a little more than the distance from New York to San Francisco and back again.
About 100,000 people started walking in October of 1934 near the Kiangsi-Fukien border; about 8,000 were still walking when they arrived in Shensi in October 1935.
Most of the missing people at the end had died from fighting, disease, or starvation, including Mao’s two children and younger brother.