| Castro Valley to Rodgau | 5,680.26 mi (9,141.49 km) |
| Castro Valley to Roding | 5,821.16 mi (9,368.25 km) |
| Castro Valley to Rodinghausen | 5,546.74 mi (8,926.61 km) |
| Castro Valley to Roetgen | 5,572.86 mi (8,968.66 km) |
| Castro Valley to Rommerskirchen | 5,565.62 mi (8,957.00 km) |
| Castro Valley to Ronnenberg | 5,573.17 mi (8,969.15 km) |
| Castro Valley to Rosbach vor der Hohe | 5,659.85 mi (9,108.65 km) |
| Castro Valley to Rosdorf | 5,624.82 mi (9,052.27 km) |
| Castro Valley to Rosenheim | 5,887.98 mi (9,475.79 km) |
| Castro Valley to Rosrath | 5,586.24 mi (8,990.18 km) |
| Castro Valley to Rossdorf | 5,685.56 mi (9,150.02 km) |
| Castro Valley to Rosstal | 5,767.56 mi (9,281.99 km) |
| Castro Valley to Rostock | 5,534.74 mi (8,907.31 km) |
| Castro Valley to Rotenburg an der Fulda | 5,648.35 mi (9,090.14 km) |
| Castro Valley to Roth | 5,781.65 mi (9,304.67 km) |
