| Watford to Rivalta di Torino | 583.56 mi (939.15 km) |
| Watford to Rivarolo Canavese | 572.80 mi (921.83 km) |
| Watford to Rivoli | 581.53 mi (935.89 km) |
| Watford to Rocca di Papa | 920.65 mi (1,481.64 km) |
| Watford to Rocca Priora | 921.32 mi (1,482.71 km) |
| Watford to Roccapiemonte | 1,038.63 mi (1,671.52 km) |
| Watford to Roccastrada | 804.35 mi (1,294.48 km) |
| Watford to Romano di Lombardia | 627.36 mi (1,009.64 km) |
| Watford to Rome | 906.38 mi (1,458.68 km) |
| Watford to Roncade | 715.07 mi (1,150.80 km) |
| Watford to Ronchi dei Legionari | 748.22 mi (1,204.14 km) |
| Watford to Ronciglione | 876.32 mi (1,410.30 km) |
| Watford to Rosa | 688.57 mi (1,108.15 km) |
| Watford to Rosarno | 1,205.42 mi (1,939.93 km) |
| Watford to Rosignano Marittimo | 761.37 mi (1,225.31 km) |
