| Tucson to Cernavoda | 6,553.07 mi (10,546.15 km) |
| Tucson to Chitila | 6,485.76 mi (10,437.82 km) |
| Tucson to Cisnadie | 6,365.91 mi (10,244.94 km) |
| Tucson to Cluj-Napoca | 6,291.42 mi (10,125.07 km) |
| Tucson to Codlea | 6,403.73 mi (10,305.81 km) |
| Tucson to Comanesti | 6,390.45 mi (10,284.44 km) |
| Tucson to Comarnic | 6,434.15 mi (10,354.76 km) |
| Tucson to Constanta | 6,579.40 mi (10,588.52 km) |
| Tucson to Corabia | 6,483.69 mi (10,434.50 km) |
| Tucson to Costesti | 6,444.95 mi (10,372.15 km) |
| Tucson to Covasna | 6,415.94 mi (10,325.46 km) |
| Tucson to Craiova | 6,432.30 mi (10,351.79 km) |
| Tucson to Cristuru Secuiesc | 6,358.95 mi (10,233.74 km) |
| Tucson to Cugir | 6,335.83 mi (10,196.53 km) |
| Tucson to Cumpana | 6,580.38 mi (10,590.10 km) |
