| Diamond Bar to Rodgau | 5,781.64 mi (9,304.65 km) |
| Diamond Bar to Roding | 5,930.40 mi (9,544.06 km) |
| Diamond Bar to Rodinghausen | 5,655.39 mi (9,101.48 km) |
| Diamond Bar to Roetgen | 5,668.98 mi (9,123.35 km) |
| Diamond Bar to Rommerskirchen | 5,664.63 mi (9,116.34 km) |
| Diamond Bar to Ronnenberg | 5,685.31 mi (9,149.61 km) |
| Diamond Bar to Rosbach vor der Hohe | 5,761.76 mi (9,272.66 km) |
| Diamond Bar to Rosdorf | 5,734.62 mi (9,228.98 km) |
| Diamond Bar to Rosenheim | 5,991.31 mi (9,642.07 km) |
| Diamond Bar to Rosrath | 5,686.10 mi (9,150.90 km) |
| Diamond Bar to Rossdorf | 5,785.97 mi (9,311.62 km) |
| Diamond Bar to Rosstal | 5,872.58 mi (9,451.01 km) |
| Diamond Bar to Rostock | 5,659.99 mi (9,108.87 km) |
| Diamond Bar to Rotenburg an der Fulda | 5,755.81 mi (9,263.08 km) |
| Diamond Bar to Roth | 5,886.75 mi (9,473.80 km) |
