| Dumbarton to Rosolini | 1,604.28 mi (2,581.84 km) |
| Dumbarton to Rossano | 1,488.01 mi (2,394.73 km) |
| Dumbarton to Rottofreno | 971.44 mi (1,563.39 km) |
| Dumbarton to Rovato | 955.26 mi (1,537.34 km) |
| Dumbarton to Roverbella | 994.05 mi (1,599.77 km) |
| Dumbarton to Rovereto | 968.61 mi (1,558.82 km) |
| Dumbarton to Rovigo | 1,034.48 mi (1,664.83 km) |
| Dumbarton to Rozzano | 941.93 mi (1,515.90 km) |
| Dumbarton to Rubano | 1,014.98 mi (1,633.45 km) |
| Dumbarton to Rubiera | 1,029.05 mi (1,656.09 km) |
| Dumbarton to Ruffano | 1,512.99 mi (2,434.92 km) |
| Dumbarton to Russi | 1,080.42 mi (1,738.77 km) |
| Dumbarton to Rutigliano | 1,418.28 mi (2,282.50 km) |
| Dumbarton to Ruvo di Puglia | 1,395.32 mi (2,245.54 km) |
| Dumbarton to Sabaudia | 1,284.54 mi (2,067.26 km) |
