| Riga to Collegno | 1,084.83 mi (1,745.87 km) |
| Riga to Cologno al Serio | 998.06 mi (1,606.22 km) |
| Riga to Cologno Monzese | 1,012.40 mi (1,629.30 km) |
| Riga to Colorno | 1,018.76 mi (1,639.54 km) |
| Riga to Comacchio | 990.34 mi (1,593.80 km) |
| Riga to Comiso | 1,449.49 mi (2,332.72 km) |
| Riga to Como | 1,001.43 mi (1,611.65 km) |
| Riga to Concordia Sagittaria | 909.98 mi (1,464.48 km) |
| Riga to Concorezzo | 1,007.34 mi (1,621.16 km) |
| Riga to Conegliano | 915.39 mi (1,473.17 km) |
| Riga to Conselice | 1,009.48 mi (1,624.60 km) |
| Riga to Conselve | 964.99 mi (1,553.00 km) |
| Riga to Conversano | 1,147.45 mi (1,846.64 km) |
| Riga to Copertino | 1,184.24 mi (1,905.85 km) |
| Riga to Copparo | 986.03 mi (1,586.86 km) |
