| Gahanna to Marshall (Minnesota) | 727.36 mi (1,170.57 km) |
| Gahanna to Marshall (Missouri) | 553.83 mi (891.31 km) |
| Gahanna to Marshall (Texas) | 821.63 mi (1,322.28 km) |
| Gahanna to Marshalltown (Iowa) | 541.20 mi (870.97 km) |
| Gahanna to Marshfield (Wisconsin) | 491.57 mi (791.11 km) |
| Gahanna to Martha Lake (Washington) | 2,008.13 mi (3,231.78 km) |
| Gahanna to Martin (Tennessee) | 412.91 mi (664.51 km) |
| Gahanna to Martinez (California) | 2,094.92 mi (3,371.45 km) |
| Gahanna to Martinez (Georgia) | 451.38 mi (726.43 km) |
| Gahanna to Martinsburg (West Virginia) | 262.49 mi (422.44 km) |
| Gahanna to Martinsville (Indiana) | 194.23 mi (312.59 km) |
| Gahanna to Martinsville (New Jersey) | 438.34 mi (705.43 km) |
| Gahanna to Martinsville (Virginia) | 282.37 mi (454.44 km) |
| Gahanna to Maryland City (Maryland) | 328.89 mi (529.30 km) |
| Gahanna to Maryland Heights (Missouri) | 416.28 mi (669.94 km) |
