Sound traveling 100 miles takes about eight minutes to arrive.

Evidence

The story of San Salvador and the ship is entirely credible. A bell heard on board that ship would have actually sounded about 8 minutes earlier in San Salvador! — Eric J. Heller, Why You Hear What You Hear- An…, 2601

Categorization

• CANDY: A delightful bar-trick fact: hearing a bell that rang eight minutes ago — the speed-of-sound delay made visceral.