| Gahanna to Castelfidardo | 4,673.76 mi (7,521.69 km) |
| Gahanna to Castelfiorentino | 4,561.34 mi (7,340.76 km) |
| Gahanna to Castelfranco di Sopra | 4,585.14 mi (7,379.08 km) |
| Gahanna to Castelfranco di Sotto | 4,548.49 mi (7,320.08 km) |
| Gahanna to Castelfranco Emilia | 4,527.32 mi (7,286.01 km) |
| Gahanna to Castelfranco Veneto | 4,523.12 mi (7,279.26 km) |
| Gahanna to Castellabate | 4,860.47 mi (7,822.17 km) |
| Gahanna to Castellammare del Golfo | 4,862.68 mi (7,825.73 km) |
| Gahanna to Castellammare di Stabia | 4,823.47 mi (7,762.62 km) |
| Gahanna to Castellamonte | 4,360.06 mi (7,016.84 km) |
| Gahanna to Castellana Grotte | 4,928.49 mi (7,931.64 km) |
| Gahanna to Castellaneta | 4,929.22 mi (7,932.81 km) |
| Gahanna to Castellanza | 4,400.94 mi (7,082.63 km) |
| Gahanna to Castellarano | 4,517.30 mi (7,269.90 km) |
| Gahanna to Castelleone | 4,448.09 mi (7,158.51 km) |
