| Watford to Ratingen | 312.64 mi (503.14 km) |
| Watford to Ratzeburg | 487.23 mi (784.12 km) |
| Watford to Raubling | 617.93 mi (994.46 km) |
| Watford to Rauenberg | 432.51 mi (696.05 km) |
| Watford to Raunheim | 401.95 mi (646.88 km) |
| Watford to Ravensburg | 520.30 mi (837.35 km) |
| Watford to Recke | 348.41 mi (560.71 km) |
| Watford to Recklinghausen | 324.10 mi (521.59 km) |
| Watford to Regen | 624.12 mi (1,004.43 km) |
| Watford to Regensburg | 578.88 mi (931.62 km) |
| Watford to Regenstauf | 577.91 mi (930.06 km) |
| Watford to Rehau | 548.22 mi (882.27 km) |
| Watford to Rehburg-Loccum | 411.41 mi (662.09 km) |
| Watford to Rehlingen-Siersburg | 348.47 mi (560.80 km) |
| Watford to Reichelsheim | 425.58 mi (684.91 km) |
