| Tucson to Cividale del Friuli | 6,010.24 mi (9,672.54 km) |
| Tucson to Civita Castellana | 6,161.23 mi (9,915.54 km) |
| Tucson to Civitanova Marche | 6,158.97 mi (9,911.91 km) |
| Tucson to Civitavecchia | 6,148.59 mi (9,895.20 km) |
| Tucson to Civitella in Val di Chiana | 6,081.81 mi (9,787.72 km) |
| Tucson to Clusone | 5,901.15 mi (9,496.99 km) |
| Tucson to Coccaglio | 5,917.28 mi (9,522.95 km) |
| Tucson to Codigoro | 6,027.24 mi (9,699.90 km) |
| Tucson to Codogno | 5,926.65 mi (9,538.02 km) |
| Tucson to Codroipo | 6,001.71 mi (9,658.81 km) |
| Tucson to Cogoleto | 5,924.60 mi (9,534.72 km) |
| Tucson to Colle di Val d'Elsa | 6,061.64 mi (9,755.27 km) |
| Tucson to Colle Salvetti | 6,028.58 mi (9,702.06 km) |
| Tucson to Collecchio | 5,964.28 mi (9,598.58 km) |
| Tucson to Colleferro | 6,210.76 mi (9,995.25 km) |
