| Gahanna to Joliet (Illinois) | 295.17 mi (475.02 km) |
| Gahanna to Jonesboro (Arkansas) | 515.25 mi (829.21 km) |
| Gahanna to Joplin (Missouri) | 660.47 mi (1,062.92 km) |
| Gahanna to Joppatowne (Maryland) | 348.53 mi (560.90 km) |
| Gahanna to Juana Díaz (Puerto Rico) | 1,804.56 mi (2,904.16 km) |
| Gahanna to Junction City (Kansas) | 747.83 mi (1,203.51 km) |
| Gahanna to Juneau (Alaska) | 2,557.21 mi (4,115.44 km) |
| Gahanna to Jupiter (Florida) | 919.11 mi (1,479.17 km) |
| Gahanna to Jupiter Farms (Florida) | 917.94 mi (1,477.28 km) |
| Gahanna to Jurupa Valley (California) | 1,941.29 mi (3,124.20 km) |
| Gahanna to Justice (Illinois) | 285.62 mi (459.66 km) |
| Gahanna to Kahului (Hawaii) | 4,453.55 mi (7,167.30 km) |
| Gahanna to Kailua (Hawaii) | 4,499.84 mi (7,241.79 km) |
| Gahanna to Kalamazoo (Michigan) | 210.35 mi (338.52 km) |
| Gahanna to Kalispell (Montana) | 1,646.20 mi (2,649.30 km) |
