| Williamstown to Karditsa | 4,871.84 mi (7,840.46 km) |
| Williamstown to Kastoria | 4,797.63 mi (7,721.04 km) |
| Williamstown to Katerini | 4,860.48 mi (7,822.19 km) |
| Williamstown to Keratsini | 5,003.07 mi (8,051.67 km) |
| Williamstown to Kerkyra | 4,774.79 mi (7,684.28 km) |
| Williamstown to Kiato | 4,963.47 mi (7,987.93 km) |
| Williamstown to Kifisia | 5,006.90 mi (8,057.83 km) |
| Williamstown to Kilkis | 4,847.05 mi (7,800.57 km) |
| Williamstown to Komotini | 4,949.11 mi (7,964.82 km) |
| Williamstown to Korinthos | 4,974.19 mi (8,005.19 km) |
| Williamstown to Koropi | 5,017.01 mi (8,074.09 km) |
| Williamstown to Korydallos | 5,003.83 mi (8,052.89 km) |
| Williamstown to Kos | 5,206.95 mi (8,379.78 km) |
| Williamstown to Kozani | 4,828.46 mi (7,770.66 km) |
| Williamstown to Lagos | 4,934.20 mi (7,940.83 km) |
