| Gaithersburg to Redon | 3,668.16 mi (5,903.34 km) |
| Gaithersburg to Reims | 3,888.03 mi (6,257.19 km) |
| Gaithersburg to Rennes | 3,674.67 mi (5,913.81 km) |
| Gaithersburg to Revel | 3,962.74 mi (6,377.41 km) |
| Gaithersburg to Reze | 3,701.91 mi (5,957.64 km) |
| Gaithersburg to Riedisheim | 4,070.05 mi (6,550.11 km) |
| Gaithersburg to Rillieux-la-Pape | 4,021.82 mi (6,472.50 km) |
| Gaithersburg to Riom | 3,941.74 mi (6,343.61 km) |
| Gaithersburg to Riorges | 3,978.00 mi (6,401.98 km) |
| Gaithersburg to Ris-Orangis | 3,836.33 mi (6,173.98 km) |
| Gaithersburg to Rive-de-Gier | 4,018.17 mi (6,466.62 km) |
| Gaithersburg to Rivesaltes | 4,022.89 mi (6,474.21 km) |
| Gaithersburg to Rixheim | 4,071.61 mi (6,552.62 km) |
| Gaithersburg to Roanne | 3,979.41 mi (6,404.25 km) |
| Gaithersburg to Roche-la-Moliere | 4,008.14 mi (6,450.48 km) |
