| Opava to Cologno al Serio | 485.06 mi (780.63 km) |
| Opava to Cologno Monzese | 502.97 mi (809.45 km) |
| Opava to Colorno | 492.62 mi (792.80 km) |
| Opava to Comacchio | 450.04 mi (724.27 km) |
| Opava to Comiso | 912.33 mi (1,468.26 km) |
| Opava to Como | 497.84 mi (801.20 km) |
| Opava to Concordia Sagittaria | 371.29 mi (597.53 km) |
| Opava to Concorezzo | 498.12 mi (801.64 km) |
| Opava to Conegliano | 381.60 mi (614.13 km) |
| Opava to Conselice | 470.26 mi (756.81 km) |
| Opava to Conselve | 429.65 mi (691.45 km) |
| Opava to Conversano | 621.03 mi (999.45 km) |
| Opava to Copertino | 668.27 mi (1,075.47 km) |
| Opava to Copparo | 448.84 mi (722.33 km) |
| Opava to Corato | 611.51 mi (984.13 km) |
