| Watford to Rosolini | 1,270.45 mi (2,044.60 km) |
| Watford to Rossano | 1,167.07 mi (1,878.22 km) |
| Watford to Rottofreno | 644.08 mi (1,036.54 km) |
| Watford to Rovato | 633.27 mi (1,019.14 km) |
| Watford to Roverbella | 674.26 mi (1,085.11 km) |
| Watford to Rovereto | 655.03 mi (1,054.17 km) |
| Watford to Rovigo | 719.09 mi (1,157.26 km) |
| Watford to Rozzano | 614.37 mi (988.74 km) |
| Watford to Rubano | 702.15 mi (1,130.01 km) |
| Watford to Rubiera | 705.52 mi (1,135.42 km) |
| Watford to Ruffano | 1,200.47 mi (1,931.97 km) |
| Watford to Russi | 761.64 mi (1,225.75 km) |
| Watford to Rutigliano | 1,104.23 mi (1,777.09 km) |
| Watford to Ruvo di Puglia | 1,080.28 mi (1,738.54 km) |
| Watford to Sabaudia | 955.96 mi (1,538.47 km) |
