| Costa Mesa to Rosemont (California) | 388.06 mi (624.52 km) |
| Costa Mesa to Rosemount (Minnesota) | 1,525.77 mi (2,455.49 km) |
| Costa Mesa to Rosenberg (Texas) | 1,328.00 mi (2,137.21 km) |
| Costa Mesa to Roseville (California) | 400.41 mi (644.39 km) |
| Costa Mesa to Roseville (Michigan) | 1,981.67 mi (3,189.19 km) |
| Costa Mesa to Roseville (Minnesota) | 1,528.68 mi (2,460.18 km) |
| Costa Mesa to Rossmoor (California) | 12.76 mi (20.54 km) |
| Costa Mesa to Rossville (Maryland) | 2,313.88 mi (3,723.83 km) |
| Costa Mesa to Roswell (Georgia) | 1,917.22 mi (3,085.47 km) |
| Costa Mesa to Roswell (New Mexico) | 770.69 mi (1,240.30 km) |
| Costa Mesa to Round Lake (Illinois) | 1,719.24 mi (2,766.84 km) |
| Costa Mesa to Round Lake Beach (Illinois) | 1,720.93 mi (2,769.57 km) |
| Costa Mesa to Round Rock (Texas) | 1,202.88 mi (1,935.85 km) |
| Costa Mesa to Rowland Heights (California) | 21.11 mi (33.97 km) |
| Costa Mesa to Rowlett (Texas) | 1,232.80 mi (1,984.00 km) |
