| Potomac to Krosno Odrzanskie | 4,249.27 mi (6,838.54 km) |
| Potomac to Krotoszyn | 4,348.19 mi (6,997.73 km) |
| Potomac to Kruszwica | 4,347.22 mi (6,996.18 km) |
| Potomac to Krynica | 4,561.64 mi (7,341.25 km) |
| Potomac to Krzeszowice | 4,485.18 mi (7,218.21 km) |
| Potomac to Kudowa-Zdroj | 4,345.39 mi (6,993.23 km) |
| Potomac to Kutno | 4,400.40 mi (7,081.75 km) |
| Potomac to Kwidzyn | 4,332.66 mi (6,972.74 km) |
| Potomac to Lancut | 4,584.94 mi (7,378.75 km) |
| Potomac to Lapy | 4,499.06 mi (7,240.55 km) |
| Potomac to Lask | 4,414.46 mi (7,104.39 km) |
| Potomac to Laziska Gorne | 4,454.96 mi (7,169.57 km) |
| Potomac to Lebork | 4,263.57 mi (6,861.55 km) |
| Potomac to Leczna | 4,562.13 mi (7,342.03 km) |
| Potomac to Leczyca | 4,400.74 mi (7,082.31 km) |
