| Watford to Rende | 1,164.92 mi (1,874.76 km) |
| Watford to Resana | 699.03 mi (1,124.98 km) |
| Watford to Rescaldina | 595.91 mi (959.02 km) |
| Watford to Rezzato | 646.71 mi (1,040.77 km) |
| Watford to Rho | 602.88 mi (970.25 km) |
| Watford to Ribera | 1,182.59 mi (1,903.20 km) |
| Watford to Riccione Marina | 801.59 mi (1,290.03 km) |
| Watford to Riesi | 1,218.17 mi (1,960.45 km) |
| Watford to Rieti | 890.70 mi (1,433.44 km) |
| Watford to Rignano Flaminio | 889.67 mi (1,431.79 km) |
| Watford to Rignano sull'Arno | 775.27 mi (1,247.68 km) |
| Watford to Rimini | 795.82 mi (1,280.74 km) |
| Watford to Rionero in Vulture | 1,062.68 mi (1,710.21 km) |
| Watford to Riposto | 1,224.26 mi (1,970.25 km) |
| Watford to Riva del Garda | 647.87 mi (1,042.64 km) |
