| Diamond Bar to Redondela | 5,524.00 mi (8,890.01 km) |
| Diamond Bar to Reinosa | 5,670.82 mi (9,126.30 km) |
| Diamond Bar to Requena | 5,949.22 mi (9,574.35 km) |
| Diamond Bar to Reus | 5,956.59 mi (9,586.20 km) |
| Diamond Bar to Rianxo | 5,500.55 mi (8,852.27 km) |
| Diamond Bar to Ribadeo | 5,534.25 mi (8,906.52 km) |
| Diamond Bar to Rincon de la Victoria | 5,945.15 mi (9,567.80 km) |
| Diamond Bar to Ripoll | 5,947.06 mi (9,570.87 km) |
| Diamond Bar to Ripollet | 5,979.63 mi (9,623.29 km) |
| Diamond Bar to Rojales | 6,029.19 mi (9,703.04 km) |
| Diamond Bar to Ronda | 5,906.91 mi (9,506.26 km) |
| Diamond Bar to Roquetas de Mar | 6,012.90 mi (9,676.83 km) |
| Diamond Bar to Rosas | 5,980.12 mi (9,624.07 km) |
| Diamond Bar to Rubi | 5,975.15 mi (9,616.08 km) |
| Diamond Bar to Rute | 5,914.82 mi (9,518.98 km) |
