| Markham to Cortona | 4,745.25 mi (7,636.74 km) |
| Markham to Cosenza | 5,090.36 mi (8,192.14 km) |
| Markham to Cossato | 4,499.60 mi (7,241.41 km) |
| Markham to Costa Volpino | 4,565.07 mi (7,346.78 km) |
| Markham to Creazzo | 4,631.09 mi (7,453.02 km) |
| Markham to Crema | 4,567.53 mi (7,350.73 km) |
| Markham to Cremona | 4,590.78 mi (7,388.15 km) |
| Markham to Crevalcore | 4,651.83 mi (7,486.39 km) |
| Markham to Crispiano | 5,070.81 mi (8,160.67 km) |
| Markham to Crosia | 5,099.10 mi (8,206.21 km) |
| Markham to Crotone | 5,135.17 mi (8,264.26 km) |
| Markham to Cuneo | 4,521.78 mi (7,277.10 km) |
| Markham to Cuorgne | 4,486.02 mi (7,219.56 km) |
| Markham to Cusano Milanino | 4,540.46 mi (7,307.16 km) |
| Markham to Cutro | 5,132.07 mi (8,259.27 km) |
