| Siena to Cavaillon | 316.96 mi (510.10 km) |
| Siena to Cebazat | 440.50 mi (708.91 km) |
| Siena to Cenon | 597.70 mi (961.91 km) |
| Siena to Cergy | 593.11 mi (954.51 km) |
| Siena to Cernay | 369.45 mi (594.57 km) |
| Siena to Cesson | 553.81 mi (891.28 km) |
| Siena to Cesson-Sevigne | 705.44 mi (1,135.30 km) |
| Siena to Cestas | 604.28 mi (972.49 km) |
| Siena to Chalette-sur-Loing | 526.17 mi (846.79 km) |
| Siena to Challans | 687.95 mi (1,107.16 km) |
| Siena to Chalon-sur-Saone | 396.31 mi (637.80 km) |
| Siena to Chalons-en-Champagne | 512.44 mi (824.70 km) |
| Siena to Chamalieres | 440.63 mi (709.13 km) |
| Siena to Chambery | 309.21 mi (497.63 km) |
| Siena to Chambly | 592.27 mi (953.16 km) |
