| Mattoon to Collegno | 4,616.00 mi (7,428.73 km) |
| Mattoon to Cologno al Serio | 4,682.35 mi (7,535.52 km) |
| Mattoon to Cologno Monzese | 4,667.62 mi (7,511.80 km) |
| Mattoon to Colorno | 4,735.23 mi (7,620.61 km) |
| Mattoon to Comacchio | 4,816.43 mi (7,751.29 km) |
| Mattoon to Comiso | 5,243.39 mi (8,438.42 km) |
| Mattoon to Como | 4,649.03 mi (7,481.89 km) |
| Mattoon to Concordia Sagittaria | 4,799.32 mi (7,723.76 km) |
| Mattoon to Concorezzo | 4,667.55 mi (7,511.70 km) |
| Mattoon to Conegliano | 4,772.90 mi (7,681.24 km) |
| Mattoon to Conselice | 4,809.92 mi (7,740.82 km) |
| Mattoon to Conselve | 4,782.31 mi (7,696.39 km) |
| Mattoon to Conversano | 5,171.92 mi (8,323.41 km) |
| Mattoon to Copertino | 5,240.50 mi (8,433.77 km) |
| Mattoon to Copparo | 4,794.43 mi (7,715.88 km) |
