Four corners of a subcontinent, in a thirty-two-year life
Ādi Śaṅkara, traditionally dated to 788–820 CE, is traditionally credited with walking the length and breadth of the Indian subcontinent and founding monastic centers (maṭhas) at its four cardinal points — Sringeri in the south, Dwaraka in the west, Puri in the east, and Jyotirmath in the Himalayan north — all within a life said to have lasted just thirty-two years.
How we know
Ādi Śaṅkara traditional dates 788–820 CE (820−788=32-year lifespan, the dominant traditional figure); four maṭhas at Sringeri (S), Dwaraka (W), Puri (E), Jyotirmath/Joshimath (N) — per Wikipedia "Adi Shankara" and Sringeri Math history. Modern scholarship favors early/mid 8th c.; some maṭhas claim 5th c. BCE — hence "traditionally dated."
One of many fact-checked wonders across eight traditions at The Spring of Wisdom.