| Gahanna to Rosemont (California) | 2,044.90 mi (3,290.95 km) |
| Gahanna to Rosemount (Minnesota) | 613.72 mi (987.69 km) |
| Gahanna to Rosenberg (Texas) | 1,029.83 mi (1,657.35 km) |
| Gahanna to Roseville (California) | 2,039.06 mi (3,281.55 km) |
| Gahanna to Roseville (Michigan) | 171.55 mi (276.09 km) |
| Gahanna to Roseville (Minnesota) | 626.55 mi (1,008.34 km) |
| Gahanna to Rossmoor (California) | 1,979.21 mi (3,185.23 km) |
| Gahanna to Rossville (Maryland) | 342.62 mi (551.40 km) |
| Gahanna to Roswell (Georgia) | 421.63 mi (678.55 km) |
| Gahanna to Roswell (New Mexico) | 1,281.14 mi (2,061.79 km) |
| Gahanna to Round Lake (Illinois) | 316.08 mi (508.69 km) |
| Gahanna to Round Lake Beach (Illinois) | 316.17 mi (508.82 km) |
| Gahanna to Round Rock (Texas) | 1,059.40 mi (1,704.94 km) |
| Gahanna to Rowland Heights (California) | 1,964.32 mi (3,161.26 km) |
| Gahanna to Rowlett (Texas) | 903.63 mi (1,454.25 km) |
