| Reign duration | country/state | Answer | % Correct |
|---|---|---|---|
| 67 years, 24 days | United Kingdoms | Elizabeth II | 94%
|
| 72 years, 110 days | France | Louis XIV | 88%
|
| 63 years, 216 days | United Kingdoms | Victoria | 75%
|
| 67 years, 355 days | Austria(-Hungary) empire | Franz Joseph I | 56%
|
| 62 years, 13 days | Japan | Hirohito | 56%
|
| 65 years, 90 days | Sicily | Ferdinand III | 31%
|
| 70 years, 126 days | Thailand | Bhumibol Adulyadej (Rama IX) | 25%
|
| 66 years, 226 days | Byzantine empire | Constantine VIII | 25%
|
| 65 years, 237 days | Byzantine empire | Basil II | 13%
|
| 62 years, 319 days | Aragon | James I | 13%
|
| 60 years, 61 days | Schwarzburg-Rudolstadt | Friedrich Günther | 6%
|
| 70 years, 91 days | Leichtenstein | Johann II | 6%
|
| 61 years, 316 days | China (Qing dynasty) | Kangxi Emperor | 6%
|
| 68 years, 33 days | Palenque | K'inich Janaab' Pakal | 6%
|
| 60 years, 113 days | China (Qing dynasty) | Qianlong Emperor | 6%
|