| Portici to Ratingen | 807.29 mi (1,299.21 km) |
| Portici to Ratzeburg | 905.43 mi (1,457.15 km) |
| Portici to Raubling | 493.95 mi (794.93 km) |
| Portici to Rauenberg | 644.89 mi (1,037.84 km) |
| Portici to Raunheim | 696.18 mi (1,120.40 km) |
| Portici to Ravensburg | 534.70 mi (860.52 km) |
| Portici to Recke | 856.86 mi (1,378.99 km) |
| Portici to Recklinghausen | 818.26 mi (1,316.87 km) |
| Portici to Regen | 565.98 mi (910.85 km) |
| Portici to Regensburg | 576.96 mi (928.52 km) |
| Portici to Regenstauf | 583.78 mi (939.50 km) |
| Portici to Rehau | 661.12 mi (1,063.97 km) |
| Portici to Rehburg-Loccum | 839.18 mi (1,350.53 km) |
| Portici to Rehlingen-Siersburg | 698.16 mi (1,123.58 km) |
| Portici to Reichelsheim | 669.84 mi (1,078.01 km) |
