| Grez-Doiceau to Roding | 362.99 mi (584.18 km) |
| Grez-Doiceau to Rodinghausen | 193.66 mi (311.66 km) |
| Grez-Doiceau to Roetgen | 65.91 mi (106.07 km) |
| Grez-Doiceau to Rommerskirchen | 89.27 mi (143.66 km) |
| Grez-Doiceau to Ronnenberg | 239.49 mi (385.42 km) |
| Grez-Doiceau to Rosbach vor der Hohe | 178.29 mi (286.92 km) |
| Grez-Doiceau to Rosdorf | 231.62 mi (372.76 km) |
| Grez-Doiceau to Rosenheim | 389.46 mi (626.78 km) |
| Grez-Doiceau to Rosrath | 109.01 mi (175.43 km) |
| Grez-Doiceau to Rossdorf | 188.91 mi (304.02 km) |
| Grez-Doiceau to Rosstal | 289.19 mi (465.40 km) |
| Grez-Doiceau to Rostock | 389.20 mi (626.36 km) |
| Grez-Doiceau to Rotenburg an der Fulda | 219.96 mi (353.99 km) |
| Grez-Doiceau to Roth | 301.81 mi (485.71 km) |
| Grez-Doiceau to Rothenbach an der Pegnitz | 302.57 mi (486.93 km) |
