| Gaithersburg to Racale | 4,801.33 mi (7,726.99 km) |
| Gaithersburg to Racconigi | 4,175.45 mi (6,719.74 km) |
| Gaithersburg to Raffadali | 4,695.17 mi (7,556.15 km) |
| Gaithersburg to Ragusa | 4,768.40 mi (7,674.00 km) |
| Gaithersburg to Ramacca | 4,749.39 mi (7,643.41 km) |
| Gaithersburg to Randazzo | 4,741.61 mi (7,630.89 km) |
| Gaithersburg to Rapallo | 4,256.37 mi (6,849.97 km) |
| Gaithersburg to Ravanusa | 4,720.37 mi (7,596.70 km) |
| Gaithersburg to Ravenna | 4,382.22 mi (7,052.50 km) |
| Gaithersburg to Recanati | 4,475.64 mi (7,202.85 km) |
| Gaithersburg to Recco | 4,252.20 mi (6,843.26 km) |
| Gaithersburg to Reggello | 4,378.63 mi (7,046.72 km) |
| Gaithersburg to Reggio di Calabria | 4,764.42 mi (7,667.59 km) |
| Gaithersburg to Reggio Emilia | 4,305.32 mi (6,928.74 km) |
| Gaithersburg to Reggiolo | 4,305.95 mi (6,929.75 km) |
