| Castle Rock to Rosolini | 5,930.73 mi (9,544.59 km) |
| Castle Rock to Rossano | 5,850.22 mi (9,415.02 km) |
| Castle Rock to Rottofreno | 5,326.25 mi (8,571.77 km) |
| Castle Rock to Rovato | 5,317.64 mi (8,557.91 km) |
| Castle Rock to Roverbella | 5,358.81 mi (8,624.17 km) |
| Castle Rock to Rovereto | 5,338.72 mi (8,591.84 km) |
| Castle Rock to Rovigo | 5,403.37 mi (8,695.88 km) |
| Castle Rock to Rozzano | 5,296.69 mi (8,524.19 km) |
| Castle Rock to Rubano | 5,385.76 mi (8,667.54 km) |
| Castle Rock to Rubiera | 5,389.26 mi (8,673.17 km) |
| Castle Rock to Ruffano | 5,884.81 mi (9,470.68 km) |
| Castle Rock to Russi | 5,446.20 mi (8,764.81 km) |
| Castle Rock to Rutigliano | 5,788.72 mi (9,316.04 km) |
| Castle Rock to Ruvo di Puglia | 5,764.83 mi (9,277.60 km) |
| Castle Rock to Sabaudia | 5,633.68 mi (9,066.53 km) |
