| Dubuque to Carpentras | 4,517.14 mi (7,269.63 km) |
| Dubuque to Carquefou | 4,130.33 mi (6,647.13 km) |
| Dubuque to Carqueiranne | 4,597.91 mi (7,399.62 km) |
| Dubuque to Carrieres-sous-Poissy | 4,208.04 mi (6,772.19 km) |
| Dubuque to Carrieres-sur-Seine | 4,218.99 mi (6,789.80 km) |
| Dubuque to Carros | 4,614.33 mi (7,426.05 km) |
| Dubuque to Carvin | 4,185.39 mi (6,735.74 km) |
| Dubuque to Castanet-Tolosan | 4,394.45 mi (7,072.19 km) |
| Dubuque to Castelginest | 4,384.78 mi (7,056.62 km) |
| Dubuque to Castelnau-le-Lez | 4,487.91 mi (7,222.59 km) |
| Dubuque to Castelnaudary | 4,421.02 mi (7,114.95 km) |
| Dubuque to Castelsarrasin | 4,357.86 mi (7,013.29 km) |
| Dubuque to Castres | 4,422.02 mi (7,116.56 km) |
| Dubuque to Caudebec-les-Elbeuf | 4,156.84 mi (6,689.79 km) |
| Dubuque to Caudry | 4,215.95 mi (6,784.92 km) |
