| Portland to Creutzwald | 5,217.40 mi (8,396.59 km) |
| Portland to Croissy-sur-Seine | 5,116.41 mi (8,234.07 km) |
| Portland to Croix | 5,043.37 mi (8,116.52 km) |
| Portland to Crosne | 5,134.12 mi (8,262.56 km) |
| Portland to Cuers | 5,543.31 mi (8,921.10 km) |
| Portland to Cugnaux | 5,390.01 mi (8,674.39 km) |
| Portland to Cusset | 5,305.66 mi (8,538.63 km) |
| Portland to Dammarie-le-Lys | 5,149.93 mi (8,288.00 km) |
| Portland to Dammartin-en-Goele | 5,121.21 mi (8,241.79 km) |
| Portland to Dardilly | 5,360.08 mi (8,626.21 km) |
| Portland to Darnetal | 5,058.16 mi (8,140.33 km) |
| Portland to Dax | 5,308.31 mi (8,542.90 km) |
| Portland to Decines-Charpieu | 5,367.79 mi (8,638.62 km) |
| Portland to Denain | 5,069.18 mi (8,158.06 km) |
| Portland to Deuil-la-Barre | 5,115.95 mi (8,233.33 km) |
