| Hartford to Krosno Odrzanskie | 3,946.65 mi (6,351.52 km) |
| Hartford to Krotoszyn | 4,045.80 mi (6,511.09 km) |
| Hartford to Kruszwica | 4,045.64 mi (6,510.83 km) |
| Hartford to Krynica | 4,258.79 mi (6,853.86 km) |
| Hartford to Krzeszowice | 4,182.42 mi (6,730.95 km) |
| Hartford to Kudowa-Zdroj | 4,042.20 mi (6,505.29 km) |
| Hartford to Kutno | 4,098.76 mi (6,596.32 km) |
| Hartford to Kwidzyn | 4,032.01 mi (6,488.89 km) |
| Hartford to Lancut | 4,282.67 mi (6,892.30 km) |
| Hartford to Lapy | 4,198.93 mi (6,757.53 km) |
| Hartford to Lask | 4,112.37 mi (6,618.22 km) |
| Hartford to Laziska Gorne | 4,152.06 mi (6,682.10 km) |
| Hartford to Lebork | 3,963.28 mi (6,378.28 km) |
| Hartford to Leczna | 4,260.76 mi (6,857.02 km) |
| Hartford to Leczyca | 4,098.95 mi (6,596.62 km) |
