| Rancho Santa Margarita to Rockville (Maryland) | 2,262.79 mi (3,641.61 km) |
| Rancho Santa Margarita to Rockville Centre (New York) | 2,443.21 mi (3,931.96 km) |
| Rancho Santa Margarita to Rockwall (Texas) | 1,221.27 mi (1,965.45 km) |
| Rancho Santa Margarita to Rocky Mount (North Carolina) | 2,247.96 mi (3,617.75 km) |
| Rancho Santa Margarita to Rocky Point (New York) | 2,478.90 mi (3,989.41 km) |
| Rancho Santa Margarita to Rocky River (Ohio) | 2,015.87 mi (3,244.24 km) |
| Rancho Santa Margarita to Roessleville (New York) | 2,431.51 mi (3,913.13 km) |
| Rancho Santa Margarita to Rogers (Arkansas) | 1,336.95 mi (2,151.62 km) |
| Rancho Santa Margarita to Rogers (Minnesota) | 1,501.66 mi (2,416.68 km) |
| Rancho Santa Margarita to Rohnert Park (California) | 432.73 mi (696.42 km) |
| Rancho Santa Margarita to Rolla (Missouri) | 1,473.48 mi (2,371.34 km) |
| Rancho Santa Margarita to Rolling Meadows (Illinois) | 1,705.28 mi (2,744.39 km) |
| Rancho Santa Margarita to Roma (Texas) | 1,216.39 mi (1,957.59 km) |
| Rancho Santa Margarita to Rome (Georgia) | 1,850.34 mi (2,977.84 km) |
| Rancho Santa Margarita to Rome (New York) | 2,346.49 mi (3,776.31 km) |
