| Gahanna to Castelletto sopra Ticino | 4,386.35 mi (7,059.14 km) |
| Gahanna to Castelli Calepio | 4,441.48 mi (7,147.87 km) |
| Gahanna to Castelnovo ne' Monti | 4,506.39 mi (7,252.34 km) |
| Gahanna to Castelnuovo Berardenga | 4,593.45 mi (7,392.44 km) |
| Gahanna to Castelnuovo di Porto | 4,682.30 mi (7,535.44 km) |
| Gahanna to Castelnuovo di Verona | 4,484.34 mi (7,216.85 km) |
| Gahanna to Castelnuovo Rangone | 4,524.13 mi (7,280.89 km) |
| Gahanna to Castelvetrano | 4,872.77 mi (7,841.97 km) |
| Gahanna to Castelvetro di Modena | 4,526.70 mi (7,285.02 km) |
| Gahanna to Castenaso | 4,547.84 mi (7,319.04 km) |
| Gahanna to Castenedolo | 4,463.72 mi (7,183.66 km) |
| Gahanna to Castiglion Fiorentino | 4,610.91 mi (7,420.54 km) |
| Gahanna to Castiglione del Lago | 4,624.20 mi (7,441.94 km) |
| Gahanna to Castiglione delle Stiviere | 4,474.65 mi (7,201.25 km) |
| Gahanna to Castrolibero | 4,953.30 mi (7,971.56 km) |
