| Gahanna to Collegno | 4,365.02 mi (7,024.82 km) |
| Gahanna to Cologno al Serio | 4,435.09 mi (7,137.59 km) |
| Gahanna to Cologno Monzese | 4,419.72 mi (7,112.85 km) |
| Gahanna to Colorno | 4,487.12 mi (7,221.32 km) |
| Gahanna to Comacchio | 4,569.91 mi (7,354.56 km) |
| Gahanna to Comiso | 4,982.70 mi (8,018.88 km) |
| Gahanna to Como | 4,401.64 mi (7,083.75 km) |
| Gahanna to Concordia Sagittaria | 4,556.33 mi (7,332.71 km) |
| Gahanna to Concorezzo | 4,419.88 mi (7,113.11 km) |
| Gahanna to Conegliano | 4,529.54 mi (7,289.58 km) |
| Gahanna to Conselice | 4,562.51 mi (7,342.66 km) |
| Gahanna to Conselve | 4,536.74 mi (7,301.18 km) |
| Gahanna to Conversano | 4,922.93 mi (7,922.69 km) |
| Gahanna to Copertino | 4,991.21 mi (8,032.57 km) |
| Gahanna to Copparo | 4,547.98 mi (7,319.26 km) |
