| Detroit to Cividale del Friuli | 4,470.08 mi (7,193.89 km) |
| Detroit to Civita Castellana | 4,584.33 mi (7,377.76 km) |
| Detroit to Civitanova Marche | 4,596.56 mi (7,397.45 km) |
| Detroit to Civitavecchia | 4,567.29 mi (7,350.34 km) |
| Detroit to Civitella in Val di Chiana | 4,510.23 mi (7,258.51 km) |
| Detroit to Clusone | 4,341.44 mi (6,986.87 km) |
| Detroit to Coccaglio | 4,354.96 mi (7,008.62 km) |
| Detroit to Codigoro | 4,469.21 mi (7,192.50 km) |
| Detroit to Codogno | 4,359.62 mi (7,016.14 km) |
| Detroit to Codroipo | 4,457.91 mi (7,174.31 km) |
| Detroit to Cogoleto | 4,346.43 mi (6,994.91 km) |
| Detroit to Colle di Val d'Elsa | 4,487.13 mi (7,221.34 km) |
| Detroit to Colle Salvetti | 4,452.57 mi (7,165.72 km) |
| Detroit to Collecchio | 4,396.27 mi (7,075.12 km) |
| Detroit to Colleferro | 4,632.57 mi (7,455.40 km) |
