| Kalkar to Ramnicu Sarat | 1,041.57 mi (1,676.24 km) |
| Kalkar to Ramnicu Valcea | 943.79 mi (1,518.88 km) |
| Kalkar to Rasnov | 968.37 mi (1,558.45 km) |
| Kalkar to Reghin | 895.35 mi (1,440.93 km) |
| Kalkar to Resita | 838.45 mi (1,349.35 km) |
| Kalkar to Roman | 982.77 mi (1,581.61 km) |
| Kalkar to Rosiori de Vede | 1,009.27 mi (1,624.26 km) |
| Kalkar to Rovinari | 904.02 mi (1,454.88 km) |
| Kalkar to Roznov | 968.29 mi (1,558.31 km) |
| Kalkar to Sabaoani | 976.68 mi (1,571.81 km) |
| Kalkar to Sacele | 977.51 mi (1,573.15 km) |
| Kalkar to Sacueni | 768.38 mi (1,236.59 km) |
| Kalkar to Salcea | 937.27 mi (1,508.39 km) |
| Kalkar to Salonta | 769.86 mi (1,238.96 km) |
| Kalkar to Sangeorgiu de Mures | 893.16 mi (1,437.40 km) |
