| Diamond Bar to River Ridge (Louisiana) | 1,636.13 mi (2,633.10 km) |
| Diamond Bar to Riverbank (California) | 311.35 mi (501.06 km) |
| Diamond Bar to Riverdale (Georgia) | 1,910.06 mi (3,073.94 km) |
| Diamond Bar to Riverdale (Illinois) | 1,719.55 mi (2,767.35 km) |
| Diamond Bar to Riverside (California) | 24.50 mi (39.43 km) |
| Diamond Bar to Riverside (Ohio) | 1,892.57 mi (3,045.80 km) |
| Diamond Bar to Riverton (Utah) | 553.25 mi (890.37 km) |
| Diamond Bar to Riverton (Wyoming) | 804.30 mi (1,294.39 km) |
| Diamond Bar to Riverview (Florida) | 2,137.01 mi (3,439.19 km) |
| Diamond Bar to Riverview (Michigan) | 1,950.62 mi (3,139.22 km) |
| Diamond Bar to Riviera Beach (Florida) | 2,290.57 mi (3,686.31 km) |
| Diamond Bar to Riviera Beach (Maryland) | 2,298.52 mi (3,699.11 km) |
| Diamond Bar to Roanoke (Virginia) | 2,123.71 mi (3,417.78 km) |
| Diamond Bar to Roanoke Rapids (North Carolina) | 2,257.16 mi (3,632.54 km) |
| Diamond Bar to Robbinsdale (Minnesota) | 1,502.33 mi (2,417.77 km) |
