| Markham to Cocentaina | 4,399.32 mi (7,080.02 km) |
| Markham to Coin | 4,280.57 mi (6,888.91 km) |
| Markham to Colindres | 4,096.69 mi (6,592.99 km) |
| Markham to Collado-Villalba | 4,169.29 mi (6,709.82 km) |
| Markham to Colmenar Viejo | 4,179.24 mi (6,725.83 km) |
| Markham to Colmenarejo | 4,171.50 mi (6,713.37 km) |
| Markham to Conil de la Frontera | 4,233.06 mi (6,812.45 km) |
| Markham to Consuegra | 4,229.77 mi (6,807.16 km) |
| Markham to Corbera de Llobregat | 4,401.95 mi (7,084.26 km) |
| Markham to Cordoba | 4,234.00 mi (6,813.97 km) |
| Markham to Coria del Rio | 4,197.15 mi (6,754.66 km) |
| Markham to Crevillente | 4,401.70 mi (7,083.85 km) |
| Markham to Cuarte de Huerva | 4,271.84 mi (6,874.86 km) |
| Markham to Cubellas | 4,398.67 mi (7,078.98 km) |
| Markham to Cuellar | 4,128.36 mi (6,643.95 km) |
