| Webster Groves to Rosolini | 5,386.55 mi (8,668.82 km) |
| Webster Groves to Rossano | 5,335.30 mi (8,586.34 km) |
| Webster Groves to Rottofreno | 4,817.64 mi (7,753.24 km) |
| Webster Groves to Rovato | 4,815.45 mi (7,749.71 km) |
| Webster Groves to Roverbella | 4,857.85 mi (7,817.95 km) |
| Webster Groves to Rovereto | 4,844.31 mi (7,796.16 km) |
| Webster Groves to Rovigo | 4,905.95 mi (7,895.37 km) |
| Webster Groves to Rozzano | 4,788.88 mi (7,706.96 km) |
| Webster Groves to Rubano | 4,891.21 mi (7,871.64 km) |
| Webster Groves to Rubiera | 4,883.28 mi (7,858.88 km) |
| Webster Groves to Ruffano | 5,382.10 mi (8,661.65 km) |
| Webster Groves to Russi | 4,944.21 mi (7,956.94 km) |
| Webster Groves to Rutigliano | 5,285.52 mi (8,506.22 km) |
| Webster Groves to Ruvo di Puglia | 5,260.72 mi (8,466.30 km) |
| Webster Groves to Sabaudia | 5,112.42 mi (8,227.64 km) |
