| San Marcos to Cortona | 6,259.22 mi (10,073.24 km) |
| San Marcos to Cosenza | 6,611.83 mi (10,640.71 km) |
| San Marcos to Cossato | 6,015.56 mi (9,681.11 km) |
| San Marcos to Costa Volpino | 6,065.11 mi (9,760.85 km) |
| San Marcos to Creazzo | 6,124.66 mi (9,856.68 km) |
| San Marcos to Crema | 6,075.50 mi (9,777.57 km) |
| San Marcos to Cremona | 6,098.87 mi (9,815.19 km) |
| San Marcos to Crevalcore | 6,156.61 mi (9,908.11 km) |
| San Marcos to Crispiano | 6,571.93 mi (10,576.50 km) |
| San Marcos to Crosia | 6,613.99 mi (10,644.19 km) |
| San Marcos to Crotone | 6,651.90 mi (10,705.20 km) |
| San Marcos to Cuneo | 6,054.33 mi (9,743.50 km) |
| San Marcos to Cuorgne | 6,007.27 mi (9,667.77 km) |
| San Marcos to Cusano Milanino | 6,049.82 mi (9,736.25 km) |
| San Marcos to Cutro | 6,650.34 mi (10,702.69 km) |
