| Oconomowoc to Cortona | 4,710.90 mi (7,581.46 km) |
| Oconomowoc to Cosenza | 5,057.92 mi (8,139.94 km) |
| Oconomowoc to Cossato | 4,464.89 mi (7,185.55 km) |
| Oconomowoc to Costa Volpino | 4,528.32 mi (7,287.62 km) |
| Oconomowoc to Creazzo | 4,593.64 mi (7,392.75 km) |
| Oconomowoc to Crema | 4,531.88 mi (7,293.35 km) |
| Oconomowoc to Cremona | 4,555.20 mi (7,330.89 km) |
| Oconomowoc to Crevalcore | 4,615.95 mi (7,428.66 km) |
| Oconomowoc to Crispiano | 5,035.53 mi (8,103.90 km) |
| Oconomowoc to Crosia | 5,065.77 mi (8,152.56 km) |
| Oconomowoc to Crotone | 5,102.19 mi (8,211.17 km) |
| Oconomowoc to Cuneo | 4,489.56 mi (7,225.24 km) |
| Oconomowoc to Cuorgne | 4,452.04 mi (7,164.87 km) |
| Oconomowoc to Cusano Milanino | 4,504.93 mi (7,249.98 km) |
| Oconomowoc to Cutro | 5,099.29 mi (8,206.51 km) |
