| Dayton to Collegno | 4,431.24 mi (7,131.40 km) |
| Dayton to Cologno al Serio | 4,500.58 mi (7,242.98 km) |
| Dayton to Cologno Monzese | 4,485.34 mi (7,218.45 km) |
| Dayton to Colorno | 4,552.78 mi (7,327.00 km) |
| Dayton to Comacchio | 4,635.27 mi (7,459.75 km) |
| Dayton to Comiso | 5,050.88 mi (8,128.60 km) |
| Dayton to Como | 4,467.15 mi (7,189.18 km) |
| Dayton to Concordia Sagittaria | 4,620.98 mi (7,436.74 km) |
| Dayton to Concorezzo | 4,485.45 mi (7,218.64 km) |
| Dayton to Conegliano | 4,594.25 mi (7,393.73 km) |
| Dayton to Conselice | 4,628.05 mi (7,448.13 km) |
| Dayton to Conselve | 4,601.91 mi (7,406.05 km) |
| Dayton to Conversano | 4,988.84 mi (8,028.76 km) |
| Dayton to Copertino | 5,057.18 mi (8,138.75 km) |
| Dayton to Copparo | 4,613.32 mi (7,424.42 km) |
