Fastest time to visit all sovereign countries - Guinness World Records The fastest time to visit all sovereign countries is 1 year 134 days, and was achieved by Michael Zervos (USA) between 17 January 2024 and 30 May 2025. After seeing the previous record for this title, Michael was impressed by the daring and sense of adventure needed and started to think about how he could attempt it. | Guinness World Records