| Potomac to Katwijk | 3,832.36 mi (6,167.58 km) |
| Potomac to Kerkrade | 3,932.63 mi (6,328.95 km) |
| Potomac to Klazienaveen | 3,919.07 mi (6,307.13 km) |
| Potomac to Koog aan de Zaan | 3,840.82 mi (6,181.19 km) |
| Potomac to Krimpen aan den IJssel | 3,846.04 mi (6,189.60 km) |
| Potomac to Krommenie | 3,838.68 mi (6,177.76 km) |
| Potomac to Kudelstaart | 3,844.60 mi (6,187.29 km) |
| Potomac to Landgraaf | 3,930.02 mi (6,324.76 km) |
| Potomac to Landsmeer | 3,846.23 mi (6,189.91 km) |
| Potomac to Langedijk | 3,834.96 mi (6,171.77 km) |
| Potomac to Laren | 3,863.30 mi (6,217.37 km) |
| Potomac to Leek | 3,884.67 mi (6,251.78 km) |
| Potomac to Leerdam | 3,866.95 mi (6,223.26 km) |
| Potomac to Leeuwarden | 3,860.72 mi (6,213.23 km) |
| Potomac to Leiden | 3,836.25 mi (6,173.85 km) |
