| Rockville to Racale | 4,800.85 mi (7,726.23 km) |
| Rockville to Racconigi | 4,174.99 mi (6,719.00 km) |
| Rockville to Raffadali | 4,694.34 mi (7,554.81 km) |
| Rockville to Ragusa | 4,767.58 mi (7,672.68 km) |
| Rockville to Ramacca | 4,748.60 mi (7,642.14 km) |
| Rockville to Randazzo | 4,740.87 mi (7,629.69 km) |
| Rockville to Rapallo | 4,255.93 mi (6,849.25 km) |
| Rockville to Ravanusa | 4,719.55 mi (7,595.38 km) |
| Rockville to Ravenna | 4,381.87 mi (7,051.95 km) |
| Rockville to Recanati | 4,475.26 mi (7,202.24 km) |
| Rockville to Recco | 4,251.75 mi (6,842.54 km) |
| Rockville to Reggello | 4,378.20 mi (7,046.03 km) |
| Rockville to Reggio di Calabria | 4,763.72 mi (7,666.46 km) |
| Rockville to Reggio Emilia | 4,304.94 mi (6,928.14 km) |
| Rockville to Reggiolo | 4,305.60 mi (6,929.19 km) |
