| Altena to Bumbesti-Jiu | 835.25 mi (1,344.20 km) |
| Altena to Busteni | 912.59 mi (1,468.67 km) |
| Altena to Buzau | 974.73 mi (1,568.67 km) |
| Altena to Cajvana | 855.41 mi (1,376.64 km) |
| Altena to Calafat | 870.20 mi (1,400.45 km) |
| Altena to Calan | 798.29 mi (1,284.72 km) |
| Altena to Calarasi | 1,032.44 mi (1,661.54 km) |
| Altena to Campia Turzii | 803.71 mi (1,293.45 km) |
| Altena to Campina | 931.52 mi (1,499.13 km) |
| Altena to Campulung | 898.15 mi (1,445.44 km) |
| Altena to Campulung Moldovenesc | 842.55 mi (1,355.95 km) |
| Altena to Caracal | 917.68 mi (1,476.86 km) |
| Altena to Caransebes | 779.90 mi (1,255.14 km) |
| Altena to Carei | 708.14 mi (1,139.64 km) |
| Altena to Cernavoda | 1,055.44 mi (1,698.56 km) |
