| Gahanna to Carmignano | 4,555.22 mi (7,330.92 km) |
| Gahanna to Carovigno | 4,956.96 mi (7,977.46 km) |
| Gahanna to Carpenedolo | 4,473.15 mi (7,198.84 km) |
| Gahanna to Carpi | 4,513.33 mi (7,263.50 km) |
| Gahanna to Carrara | 4,507.08 mi (7,253.45 km) |
| Gahanna to Carugate | 4,421.21 mi (7,115.25 km) |
| Gahanna to Casal di Principe | 4,795.74 mi (7,718.00 km) |
| Gahanna to Casale Monferrato | 4,399.98 mi (7,081.08 km) |
| Gahanna to Casale sul Sile | 4,541.82 mi (7,309.36 km) |
| Gahanna to Casalecchio di Reno | 4,541.11 mi (7,308.20 km) |
| Gahanna to Casalgrande | 4,514.61 mi (7,265.57 km) |
| Gahanna to Casalmaggiore | 4,486.47 mi (7,220.27 km) |
| Gahanna to Casalnuovo di Napoli | 4,808.95 mi (7,739.26 km) |
| Gahanna to Casalpusterlengo | 4,447.83 mi (7,158.09 km) |
| Gahanna to Casaluce | 4,799.24 mi (7,723.63 km) |
