| Gahanna to Ridgeland (Mississippi) | 663.32 mi (1,067.51 km) |
| Gahanna to Ridgewood (New Jersey) | 464.27 mi (747.17 km) |
| Gahanna to Rifle (Colorado) | 1,318.75 mi (2,122.32 km) |
| Gahanna to Rincon (Georgia) | 541.76 mi (871.88 km) |
| Gahanna to Ringwood (New Jersey) | 456.76 mi (735.08 km) |
| Gahanna to Río Grande (Puerto Rico) | 1,806.88 mi (2,907.89 km) |
| Gahanna to Rio Grande City (Texas) | 1,314.91 mi (2,116.14 km) |
| Gahanna to Rio Linda (California) | 2,046.89 mi (3,294.15 km) |
| Gahanna to Rio Rancho (New Mexico) | 1,339.78 mi (2,156.17 km) |
| Gahanna to Rio Rico (Arizona) | 1,674.75 mi (2,695.25 km) |
| Gahanna to Ripon (California) | 2,048.39 mi (3,296.57 km) |
| Gahanna to River Edge (New Jersey) | 467.78 mi (752.82 km) |
| Gahanna to River Falls (Wisconsin) | 598.78 mi (963.65 km) |
| Gahanna to River Forest (Illinois) | 288.99 mi (465.08 km) |
| Gahanna to River Grove (Illinois) | 290.71 mi (467.85 km) |
