| Gahanna to Cividale del Friuli | 4,566.97 mi (7,349.83 km) |
| Gahanna to Civita Castellana | 4,672.14 mi (7,519.08 km) |
| Gahanna to Civitanova Marche | 4,687.95 mi (7,544.53 km) |
| Gahanna to Civitavecchia | 4,654.00 mi (7,489.88 km) |
| Gahanna to Civitella in Val di Chiana | 4,599.67 mi (7,402.45 km) |
| Gahanna to Clusone | 4,434.41 mi (7,136.49 km) |
| Gahanna to Coccaglio | 4,447.25 mi (7,157.15 km) |
| Gahanna to Codigoro | 4,562.11 mi (7,342.00 km) |
| Gahanna to Codogno | 4,450.75 mi (7,162.79 km) |
| Gahanna to Codroipo | 4,554.06 mi (7,329.06 km) |
| Gahanna to Cogoleto | 4,434.75 mi (7,137.05 km) |
| Gahanna to Colle di Val d'Elsa | 4,575.91 mi (7,364.21 km) |
| Gahanna to Colle Salvetti | 4,541.08 mi (7,308.16 km) |
| Gahanna to Collecchio | 4,487.02 mi (7,221.16 km) |
| Gahanna to Colleferro | 4,719.88 mi (7,595.91 km) |
