| Douglas to Cologno al Serio | 930.39 mi (1,497.32 km) |
| Douglas to Cologno Monzese | 915.77 mi (1,473.78 km) |
| Douglas to Colorno | 983.42 mi (1,582.66 km) |
| Douglas to Comacchio | 1,064.62 mi (1,713.34 km) |
| Douglas to Comiso | 1,522.88 mi (2,450.83 km) |
| Douglas to Como | 897.08 mi (1,443.71 km) |
| Douglas to Concordia Sagittaria | 1,051.36 mi (1,692.00 km) |
| Douglas to Concorezzo | 915.64 mi (1,473.58 km) |
| Douglas to Conegliano | 1,024.32 mi (1,648.48 km) |
| Douglas to Conselice | 1,057.96 mi (1,702.62 km) |
| Douglas to Conselve | 1,031.03 mi (1,659.28 km) |
| Douglas to Conversano | 1,420.26 mi (2,285.69 km) |
| Douglas to Copertino | 1,488.94 mi (2,396.21 km) |
| Douglas to Copparo | 1,042.64 mi (1,677.96 km) |
| Douglas to Corato | 1,383.70 mi (2,226.85 km) |
