| Gahanna to Rockville (Maryland) | 310.92 mi (500.38 km) |
| Gahanna to Rockville Centre (New York) | 487.59 mi (784.70 km) |
| Gahanna to Rockwall (Texas) | 898.40 mi (1,445.84 km) |
| Gahanna to Rocky Mount (North Carolina) | 392.87 mi (632.26 km) |
| Gahanna to Rocky Point (New York) | 525.21 mi (845.25 km) |
| Gahanna to Rocky River (Ohio) | 113.01 mi (181.87 km) |
| Gahanna to Roessleville (New York) | 504.83 mi (812.44 km) |
| Gahanna to Rogers (Arkansas) | 663.97 mi (1,068.55 km) |
| Gahanna to Rogers (Minnesota) | 650.36 mi (1,046.66 km) |
| Gahanna to Rohnert Park (California) | 2,118.52 mi (3,409.43 km) |
| Gahanna to Rolla (Missouri) | 498.70 mi (802.58 km) |
| Gahanna to Rolling Meadows (Illinois) | 303.87 mi (489.04 km) |
| Gahanna to Roma (Texas) | 1,320.43 mi (2,125.02 km) |
| Gahanna to Rome (Georgia) | 417.91 mi (672.56 km) |
| Gahanna to Rome (New York) | 440.11 mi (708.28 km) |
