| Kocaeli to Ratingen | 1,315.79 mi (2,117.56 km) |
| Kocaeli to Ratzeburg | 1,260.23 mi (2,028.14 km) |
| Kocaeli to Raubling | 1,002.67 mi (1,613.64 km) |
| Kocaeli to Rauenberg | 1,185.29 mi (1,907.54 km) |
| Kocaeli to Raunheim | 1,215.65 mi (1,956.40 km) |
| Kocaeli to Ravensburg | 1,111.07 mi (1,788.09 km) |
| Kocaeli to Recke | 1,315.77 mi (2,117.53 km) |
| Kocaeli to Recklinghausen | 1,312.01 mi (2,111.47 km) |
| Kocaeli to Regen | 994.95 mi (1,601.22 km) |
| Kocaeli to Regensburg | 1,038.77 mi (1,671.74 km) |
| Kocaeli to Regenstauf | 1,040.28 mi (1,674.18 km) |
| Kocaeli to Rehau | 1,082.07 mi (1,741.43 km) |
| Kocaeli to Rehburg-Loccum | 1,264.26 mi (2,034.63 km) |
| Kocaeli to Rehlingen-Siersburg | 1,273.22 mi (2,049.06 km) |
| Kocaeli to Reichelsheim | 1,191.45 mi (1,917.46 km) |
