| Castaic to Redon | 5,541.16 mi (8,917.63 km) |
| Castaic to Reims | 5,667.84 mi (9,121.50 km) |
| Castaic to Rennes | 5,533.91 mi (8,905.97 km) |
| Castaic to Revel | 5,883.45 mi (9,468.49 km) |
| Castaic to Reze | 5,580.28 mi (8,980.59 km) |
| Castaic to Riedisheim | 5,848.55 mi (9,412.34 km) |
| Castaic to Rillieux-la-Pape | 5,866.76 mi (9,441.64 km) |
| Castaic to Riom | 5,803.26 mi (9,339.44 km) |
| Castaic to Riorges | 5,827.15 mi (9,377.90 km) |
| Castaic to Ris-Orangis | 5,645.66 mi (9,085.81 km) |
| Castaic to Rive-de-Gier | 5,871.96 mi (9,450.00 km) |
| Castaic to Rivesaltes | 5,948.15 mi (9,572.63 km) |
| Castaic to Rixheim | 5,849.70 mi (9,414.19 km) |
| Castaic to Roanne | 5,828.40 mi (9,379.91 km) |
| Castaic to Roche-la-Moliere | 5,866.86 mi (9,441.81 km) |
