| Castrop-Rauxel to Klaukkala | 904.22 mi (1,455.20 km) |
| Castrop-Rauxel to Kokkola | 1,024.27 mi (1,648.41 km) |
| Castrop-Rauxel to Kontiolahti | 1,135.09 mi (1,826.74 km) |
| Castrop-Rauxel to Korsholm | 957.05 mi (1,540.23 km) |
| Castrop-Rauxel to Kotka | 970.35 mi (1,561.63 km) |
| Castrop-Rauxel to Kouvola | 978.00 mi (1,573.93 km) |
| Castrop-Rauxel to Kuhmo | 1,180.12 mi (1,899.22 km) |
| Castrop-Rauxel to Kuopio | 1,083.70 mi (1,744.05 km) |
| Castrop-Rauxel to Kurikka | 946.55 mi (1,523.32 km) |
| Castrop-Rauxel to Kuusamo | 1,253.46 mi (2,017.25 km) |
| Castrop-Rauxel to Kuusankoski | 977.21 mi (1,572.67 km) |
| Castrop-Rauxel to Lahti | 952.94 mi (1,533.61 km) |
| Castrop-Rauxel to Laitila | 845.53 mi (1,360.74 km) |
| Castrop-Rauxel to Lapinlahti | 1,096.49 mi (1,764.64 km) |
| Castrop-Rauxel to Lappeenranta | 1,027.48 mi (1,653.58 km) |
