| Owings Mills to Rodgau | 4,035.39 mi (6,494.34 km) |
| Owings Mills to Roding | 4,206.12 mi (6,769.09 km) |
| Owings Mills to Rodinghausen | 3,955.44 mi (6,365.67 km) |
| Owings Mills to Roetgen | 3,909.53 mi (6,291.78 km) |
| Owings Mills to Rommerskirchen | 3,918.71 mi (6,306.55 km) |
| Owings Mills to Ronnenberg | 3,998.93 mi (6,435.65 km) |
| Owings Mills to Rosbach vor der Hohe | 4,019.80 mi (6,469.25 km) |
| Owings Mills to Rosdorf | 4,032.08 mi (6,489.00 km) |
| Owings Mills to Rosenheim | 4,234.49 mi (6,814.76 km) |
| Owings Mills to Rosrath | 3,942.05 mi (6,344.11 km) |
| Owings Mills to Rossdorf | 4,034.92 mi (6,493.58 km) |
| Owings Mills to Rosstal | 4,134.38 mi (6,653.65 km) |
| Owings Mills to Rostock | 4,041.11 mi (6,503.54 km) |
| Owings Mills to Rotenburg an der Fulda | 4,040.12 mi (6,501.94 km) |
| Owings Mills to Roth | 4,147.54 mi (6,674.82 km) |
