Here are some notable sojourns, from the longest to the shortest:
Sir John Mandeville: Thirty-four years (1322–1356) traveling in Europe, Asia, and Africa. But Mandeville may not have existed, or if he did exist, as an English knight, he probably never left England. Although his Travels is full of incident and amazing sights, it is undoubtedly a massive example of literary cannibalism from the work of others: plagiarism, invention, legends, boasts, and tall tales culled from the works of travelers, borrowers, romancers, and other plagiarists.
Ibn Battuta: Twenty-nine years altogether (1325–1354). He went on the haj to Mecca in 1325 and kept going in Asia, Africa, and the Middle East. He was the only known medieval traveler who visited the countries of every Muslim ruler of his time, as well as such infidel places as Constantinople, Ceylon, and China. He described both Khan-Baliq (Beijing) and Timbuktu. Known in the Muslim world (and in particular his native Morocco), he came to prominence in English-speaking countries only after a translation of part of his Travels appeared in 1829. Called the greatest traveler the world has ever seen, Ibn Battuta's journeying has been estimated at about 75,000 miles.
He mistook the Niger for the Nile, but nevertheless received an enlightenment one day in 1352:
I saw a crocodile in this part of the Nile [Niger], close to the bank; it looked just like a small boat. One day I went down to the river to satisfy a need, and lo, one of the blacks came and stood between me and the river. I was amazed at such lack of manners and decency on his part, and spoke of it to someone or other. He answered, "His purpose in doing that was solely to protect you from the crocodile, buy placing himself between you and it."
Marco Polo: Twenty-six years in total (1271–1297), seventeen of them in the service of Kublai Khan. In spite of this, Marco seems not to have noticed—certainly he never mentions—that the Chinese drink tea, use printing, and that they'd built the Great Wall.
"Marco Polo was not merely a traveler," Laurence Bergreen writes in Marco Polo: From Venice to Xanadu,"he was a participant in the history of his times." Bergreen identifies the reality behind some of the marvels (the humanlike "monkeys" in Sumatra were Pygmies, the dark unicorn a rhino, and so forth) and makes a case for Marco's omitting any mention of the Great Wall: "It was constructed during the Ming Dynasty (1368–1644), long after Marco Polo's day."
Marco does mention Buddhism and describes Buddha, calling him by his Mongol title, "Burkhan," the equivalent of "Enlightened." Nicknamed Il Milione for his reputation as a recounter of marvels (see Chapter 20, "Imaginary People"), he dictated his book to a well-known writer of romances, Rustichello (of Pisa), in 1298 while in prison for two years in Genoa. Rustichello may have overegged some of the events and descriptions, but the Travels (the first printed version appeared in Nuremberg in 1477) is still an astonishing eyewitness account of the then-known world and was regarded in Europe for centuries as a geography of Asia. Columbus carried an annotated copy with him on his voyages, which persuaded him in the Caribbean that he had reached the offshore islands of India, which is how the Indies got its name and why the natives of the hemisphere are known as Indians.
Xuanzang: Seventeen years (629–645). This Tang Dynasty monk, scholar, translator, and indefatigable traveler (his name is also rendered Hsuan-tsang), was twenty-seven when he set off on his journey to the West (the title of the Ming Dynasty novel that dramatized his travels), resulting in The Great Tang Dynasty Record of the Western Regions. This incomparable record of travel contains a precise account of distances, landscapes, commerce, and the numerous cultures, beliefs, and peoples along the Silk Road, to the edge of Persia, to what is now Afghanistan, Pakistan, India, and Nepal. Xuanzang's journey of thousands of miles is so well documented it enabled archaeologists of the nineteenth and twentieth centuries to find and excavate these ancient sites (see Chapter 13, "It Is Solved by Walking").
Lafcadio Hearn in Japan: The last fourteen years of his life, from 1890 to 1904. Hearn had traveled before this to the West Indies and elsewhere, and though he was not traveling the whole time he was in Japan, he lived as an alien, collecting grievances and insights into Japanese life, under his new name, Koizumi Yakumo.