| Hartford to Karditsa | 4,691.36 mi (7,550.01 km) |
| Hartford to Kastoria | 4,616.57 mi (7,429.65 km) |
| Hartford to Katerini | 4,679.11 mi (7,530.29 km) |
| Hartford to Keratsini | 4,822.90 mi (7,761.70 km) |
| Hartford to Kerkyra | 4,594.97 mi (7,394.89 km) |
| Hartford to Kiato | 4,783.65 mi (7,698.54 km) |
| Hartford to Kifisia | 4,826.55 mi (7,767.58 km) |
| Hartford to Kilkis | 4,665.05 mi (7,507.67 km) |
| Hartford to Komotini | 4,766.13 mi (7,670.35 km) |
| Hartford to Korinthos | 4,794.35 mi (7,715.76 km) |
| Hartford to Koropi | 4,836.76 mi (7,784.02 km) |
| Hartford to Korydallos | 4,823.63 mi (7,762.88 km) |
| Hartford to Kos | 5,025.95 mi (8,088.49 km) |
| Hartford to Kozani | 4,647.35 mi (7,479.18 km) |
| Hartford to Lagos | 4,751.38 mi (7,646.61 km) |
