| Watford to Redon | 286.73 mi (461.45 km) |
| Watford to Reims | 255.45 mi (411.11 km) |
| Watford to Rennes | 251.19 mi (404.25 km) |
| Watford to Revel | 577.18 mi (928.88 km) |
| Watford to Reze | 312.85 mi (503.49 km) |
| Watford to Riedisheim | 439.14 mi (706.73 km) |
| Watford to Rillieux-la-Pape | 469.45 mi (755.51 km) |
| Watford to Riom | 428.80 mi (690.09 km) |
| Watford to Riorges | 436.89 mi (703.11 km) |
| Watford to Ris-Orangis | 241.82 mi (389.17 km) |
| Watford to Rive-de-Gier | 480.98 mi (774.06 km) |
| Watford to Rivesaltes | 632.69 mi (1,018.21 km) |
| Watford to Rixheim | 440.45 mi (708.83 km) |
| Watford to Roanne | 437.86 mi (704.67 km) |
| Watford to Roche-la-Moliere | 480.75 mi (773.70 km) |
