| Rancho Santa Margarita to River Ridge (Louisiana) | 1,622.85 mi (2,611.73 km) |
| Rancho Santa Margarita to Riverbank (California) | 339.43 mi (546.26 km) |
| Rancho Santa Margarita to Riverdale (Georgia) | 1,901.67 mi (3,060.44 km) |
| Rancho Santa Margarita to Riverdale (Illinois) | 1,720.05 mi (2,768.15 km) |
| Rancho Santa Margarita to Riverside (California) | 24.19 mi (38.92 km) |
| Rancho Santa Margarita to Riverside (Ohio) | 1,890.72 mi (3,042.83 km) |
| Rancho Santa Margarita to Riverton (Utah) | 567.90 mi (913.94 km) |
| Rancho Santa Margarita to Riverton (Wyoming) | 817.74 mi (1,316.02 km) |
| Rancho Santa Margarita to Riverview (Florida) | 2,123.88 mi (3,418.06 km) |
| Rancho Santa Margarita to Riverview (Michigan) | 1,951.24 mi (3,140.22 km) |
| Rancho Santa Margarita to Riviera Beach (Florida) | 2,277.21 mi (3,664.82 km) |
| Rancho Santa Margarita to Riviera Beach (Maryland) | 2,296.16 mi (3,695.32 km) |
| Rancho Santa Margarita to Roanoke (Virginia) | 2,119.42 mi (3,410.87 km) |
| Rancho Santa Margarita to Roanoke Rapids (North Carolina) | 2,252.28 mi (3,624.70 km) |
| Rancho Santa Margarita to Robbinsdale (Minnesota) | 1,508.23 mi (2,427.26 km) |
