| Alpena to Cividale del Friuli | 4,363.66 mi (7,022.64 km) |
| Alpena to Civita Castellana | 4,488.40 mi (7,223.38 km) |
| Alpena to Civitanova Marche | 4,496.41 mi (7,236.27 km) |
| Alpena to Civitavecchia | 4,472.69 mi (7,198.11 km) |
| Alpena to Civitella in Val di Chiana | 4,412.52 mi (7,101.27 km) |
| Alpena to Clusone | 4,239.89 mi (6,823.44 km) |
| Alpena to Coccaglio | 4,254.18 mi (6,846.44 km) |
| Alpena to Codigoro | 4,367.52 mi (7,028.85 km) |
| Alpena to Codogno | 4,260.21 mi (6,856.15 km) |
| Alpena to Codroipo | 4,352.39 mi (7,004.50 km) |
| Alpena to Cogoleto | 4,250.36 mi (6,840.29 km) |
| Alpena to Colle di Val d'Elsa | 4,390.26 mi (7,065.43 km) |
| Alpena to Colle Salvetti | 4,356.07 mi (7,010.42 km) |
| Alpena to Collecchio | 4,297.24 mi (6,915.74 km) |
| Alpena to Colleferro | 4,537.15 mi (7,301.84 km) |
