| Clarksburg to Rosolini | 4,781.84 mi (7,695.63 km) |
| Clarksburg to Rossano | 4,751.22 mi (7,646.35 km) |
| Clarksburg to Rottofreno | 4,245.43 mi (6,832.35 km) |
| Clarksburg to Rovato | 4,248.00 mi (6,836.50 km) |
| Clarksburg to Roverbella | 4,290.64 mi (6,905.12 km) |
| Clarksburg to Rovereto | 4,282.15 mi (6,891.46 km) |
| Clarksburg to Rovigo | 4,340.59 mi (6,985.51 km) |
| Clarksburg to Rozzano | 4,217.71 mi (6,787.75 km) |
| Clarksburg to Rubano | 4,328.20 mi (6,965.56 km) |
| Clarksburg to Rubiera | 4,311.99 mi (6,939.48 km) |
| Clarksburg to Ruffano | 4,805.92 mi (7,734.37 km) |
| Clarksburg to Russi | 4,374.91 mi (7,040.73 km) |
| Clarksburg to Rutigliano | 4,710.34 mi (7,580.56 km) |
| Clarksburg to Ruvo di Puglia | 4,685.23 mi (7,540.15 km) |
| Clarksburg to Sabaudia | 4,526.86 mi (7,285.28 km) |
