| Oro Valley to Cernavoda | 6,539.51 mi (10,524.33 km) |
| Oro Valley to Chitila | 6,472.47 mi (10,416.44 km) |
| Oro Valley to Cisnadie | 6,352.70 mi (10,223.69 km) |
| Oro Valley to Cluj-Napoca | 6,278.14 mi (10,103.69 km) |
| Oro Valley to Codlea | 6,390.35 mi (10,284.28 km) |
| Oro Valley to Comanesti | 6,376.83 mi (10,262.52 km) |
| Oro Valley to Comarnic | 6,420.80 mi (10,333.28 km) |
| Oro Valley to Constanta | 6,565.78 mi (10,566.60 km) |
| Oro Valley to Corabia | 6,470.73 mi (10,413.63 km) |
| Oro Valley to Costesti | 6,431.80 mi (10,350.98 km) |
| Oro Valley to Covasna | 6,402.44 mi (10,303.73 km) |
| Oro Valley to Craiova | 6,419.35 mi (10,330.95 km) |
| Oro Valley to Cristuru Secuiesc | 6,345.54 mi (10,212.16 km) |
| Oro Valley to Cugir | 6,322.71 mi (10,175.42 km) |
| Oro Valley to Cumpana | 6,566.78 mi (10,568.21 km) |
