| Castro Valley to Reichenbach/Vogtland | 5,735.12 mi (9,229.79 km) |
| Castro Valley to Reinbek | 5,521.92 mi (8,886.67 km) |
| Castro Valley to Reinfeld | 5,509.58 mi (8,866.82 km) |
| Castro Valley to Reinheim | 5,689.31 mi (9,156.06 km) |
| Castro Valley to Reiskirchen | 5,646.80 mi (9,087.64 km) |
| Castro Valley to Rellingen | 5,503.53 mi (8,857.08 km) |
| Castro Valley to Remagen | 5,604.94 mi (9,020.28 km) |
| Castro Valley to Remscheid | 5,571.34 mi (8,966.20 km) |
| Castro Valley to Rendsburg | 5,463.95 mi (8,793.38 km) |
| Castro Valley to Renningen | 5,750.63 mi (9,254.75 km) |
| Castro Valley to Reutlingen | 5,773.99 mi (9,292.34 km) |
| Castro Valley to Rhaude | 5,473.08 mi (8,808.08 km) |
| Castro Valley to Rheda-Wiedenbruck | 5,564.64 mi (8,955.42 km) |
| Castro Valley to Rhede | 5,522.84 mi (8,888.15 km) |
| Castro Valley to Rheinau | 5,728.41 mi (9,218.98 km) |
