| Owings Mills to Collegno | 4,131.31 mi (6,648.71 km) |
| Owings Mills to Cologno al Serio | 4,206.71 mi (6,770.05 km) |
| Owings Mills to Cologno Monzese | 4,190.46 mi (6,743.89 km) |
| Owings Mills to Colorno | 4,257.29 mi (6,851.45 km) |
| Owings Mills to Comacchio | 4,342.15 mi (6,988.02 km) |
| Owings Mills to Comiso | 4,732.26 mi (7,615.84 km) |
| Owings Mills to Como | 4,173.19 mi (6,716.10 km) |
| Owings Mills to Concordia Sagittaria | 4,333.83 mi (6,974.62 km) |
| Owings Mills to Concorezzo | 4,190.95 mi (6,744.68 km) |
| Owings Mills to Conegliano | 4,306.58 mi (6,930.77 km) |
| Owings Mills to Conselice | 4,333.47 mi (6,974.05 km) |
| Owings Mills to Conselve | 4,310.52 mi (6,937.11 km) |
| Owings Mills to Conversano | 4,690.33 mi (7,548.35 km) |
| Owings Mills to Copertino | 4,757.96 mi (7,657.20 km) |
| Owings Mills to Copparo | 4,320.41 mi (6,953.02 km) |
