| Dubuque to Creutzwald | 4,373.26 mi (7,038.08 km) |
| Dubuque to Croissy-sur-Seine | 4,214.61 mi (6,782.76 km) |
| Dubuque to Croix | 4,185.69 mi (6,736.21 km) |
| Dubuque to Crosne | 4,232.91 mi (6,812.22 km) |
| Dubuque to Cuers | 4,591.86 mi (7,389.89 km) |
| Dubuque to Cugnaux | 4,387.21 mi (7,060.53 km) |
| Dubuque to Cusset | 4,370.64 mi (7,033.87 km) |
| Dubuque to Dammarie-le-Lys | 4,247.19 mi (6,835.19 km) |
| Dubuque to Dammartin-en-Goele | 4,228.58 mi (6,805.24 km) |
| Dubuque to Dardilly | 4,434.69 mi (7,136.94 km) |
| Dubuque to Darnetal | 4,155.84 mi (6,688.18 km) |
| Dubuque to Dax | 4,281.28 mi (6,890.05 km) |
| Dubuque to Decines-Charpieu | 4,444.24 mi (7,152.31 km) |
| Dubuque to Denain | 4,207.72 mi (6,771.68 km) |
| Dubuque to Deuil-la-Barre | 4,217.99 mi (6,788.20 km) |
