| Ronkonkoma to Cortona | 4,168.82 mi (6,709.07 km) |
| Ronkonkoma to Cosenza | 4,501.23 mi (7,244.04 km) |
| Ronkonkoma to Cossato | 3,927.84 mi (6,321.25 km) |
| Ronkonkoma to Costa Volpino | 4,002.58 mi (6,441.52 km) |
| Ronkonkoma to Creazzo | 4,071.22 mi (6,552.00 km) |
| Ronkonkoma to Crema | 3,999.56 mi (6,436.66 km) |
| Ronkonkoma to Cremona | 4,022.12 mi (6,472.98 km) |
| Ronkonkoma to Crevalcore | 4,083.87 mi (6,572.35 km) |
| Ronkonkoma to Crispiano | 4,495.20 mi (7,234.33 km) |
| Ronkonkoma to Crosia | 4,514.04 mi (7,264.64 km) |
| Ronkonkoma to Crotone | 4,548.15 mi (7,319.55 km) |
| Ronkonkoma to Cuneo | 3,937.87 mi (6,337.40 km) |
| Ronkonkoma to Cuorgne | 3,910.92 mi (6,294.01 km) |
| Ronkonkoma to Cusano Milanino | 3,972.21 mi (6,392.66 km) |
| Ronkonkoma to Cutro | 4,544.12 mi (7,313.06 km) |
