| Catonsville to Ratingen | 3,922.62 mi (6,312.85 km) |
| Catonsville to Ratzeburg | 4,006.44 mi (6,447.74 km) |
| Catonsville to Raubling | 4,239.88 mi (6,823.42 km) |
| Catonsville to Rauenberg | 4,054.91 mi (6,525.75 km) |
| Catonsville to Raunheim | 4,022.68 mi (6,473.87 km) |
| Catonsville to Ravensburg | 4,137.29 mi (6,658.33 km) |
| Catonsville to Recke | 3,927.80 mi (6,321.18 km) |
| Catonsville to Recklinghausen | 3,927.24 mi (6,320.29 km) |
| Catonsville to Regen | 4,243.11 mi (6,828.62 km) |
| Catonsville to Regensburg | 4,199.40 mi (6,758.28 km) |
| Catonsville to Regenstauf | 4,197.79 mi (6,755.70 km) |
| Catonsville to Rehau | 4,157.82 mi (6,691.37 km) |
| Catonsville to Rehburg-Loccum | 3,983.14 mi (6,410.25 km) |
| Catonsville to Rehlingen-Siersburg | 3,969.18 mi (6,387.78 km) |
| Catonsville to Reichelsheim | 4,047.22 mi (6,513.37 km) |
