| Diamond Bar to Rheinbach | 5,692.51 mi (9,161.21 km) |
| Diamond Bar to Rheinberg | 5,636.33 mi (9,070.80 km) |
| Diamond Bar to Rheine | 5,623.82 mi (9,050.67 km) |
| Diamond Bar to Rheinfelden (Baden) | 5,873.76 mi (9,452.90 km) |
| Diamond Bar to Ribnitz-Damgarten | 5,659.78 mi (9,108.53 km) |
| Diamond Bar to Richterich | 5,656.92 mi (9,103.94 km) |
| Diamond Bar to Riedlingen | 5,895.41 mi (9,487.74 km) |
| Diamond Bar to Riegelsberg | 5,759.41 mi (9,268.88 km) |
| Diamond Bar to Rielasingen-Worblingen | 5,897.66 mi (9,491.37 km) |
| Diamond Bar to Riesa | 5,839.00 mi (9,396.97 km) |
| Diamond Bar to Rietberg | 5,677.20 mi (9,136.57 km) |
| Diamond Bar to Rinteln | 5,675.75 mi (9,134.23 km) |
| Diamond Bar to Ritterhude | 5,615.68 mi (9,037.57 km) |
| Diamond Bar to Rodenbach | 5,779.23 mi (9,300.77 km) |
| Diamond Bar to Rodental | 5,831.45 mi (9,384.82 km) |
