| Oro Valley to Cortona | 6,087.28 mi (9,796.53 km) |
| Oro Valley to Cosenza | 6,438.64 mi (10,361.98 km) |
| Oro Valley to Cossato | 5,841.59 mi (9,401.14 km) |
| Oro Valley to Costa Volpino | 5,897.55 mi (9,491.19 km) |
| Oro Valley to Creazzo | 5,959.89 mi (9,591.52 km) |
| Oro Valley to Crema | 5,904.95 mi (9,503.10 km) |
| Oro Valley to Cremona | 5,928.40 mi (9,540.84 km) |
| Oro Valley to Crevalcore | 5,987.73 mi (9,636.32 km) |
| Oro Valley to Crispiano | 6,406.67 mi (10,310.54 km) |
| Oro Valley to Crosia | 6,443.47 mi (10,369.76 km) |
| Oro Valley to Crotone | 6,480.83 mi (10,429.89 km) |
| Oro Valley to Cuneo | 5,873.98 mi (9,453.25 km) |
| Oro Valley to Cuorgne | 5,831.19 mi (9,384.39 km) |
| Oro Valley to Cusano Milanino | 5,878.60 mi (9,460.69 km) |
| Oro Valley to Cutro | 6,478.63 mi (10,426.35 km) |
