| Omurtag to Cologno al Serio | 842.04 mi (1,355.13 km) |
| Omurtag to Cologno Monzese | 861.99 mi (1,387.24 km) |
| Omurtag to Colorno | 805.31 mi (1,296.02 km) |
| Omurtag to Comacchio | 716.25 mi (1,152.69 km) |
| Omurtag to Comiso | 754.80 mi (1,214.74 km) |
| Omurtag to Como | 873.14 mi (1,405.18 km) |
| Omurtag to Concordia Sagittaria | 693.29 mi (1,115.74 km) |
| Omurtag to Concorezzo | 859.61 mi (1,383.40 km) |
| Omurtag to Conegliano | 720.96 mi (1,160.27 km) |
| Omurtag to Conselice | 732.72 mi (1,179.21 km) |
| Omurtag to Conselve | 734.97 mi (1,182.82 km) |
| Omurtag to Conversano | 499.21 mi (803.40 km) |
| Omurtag to Copertino | 473.76 mi (762.45 km) |
| Omurtag to Copparo | 734.38 mi (1,181.87 km) |
| Omurtag to Corato | 530.34 mi (853.51 km) |
