| Oconomowoc to Cernavoda | 5,241.47 mi (8,435.34 km) |
| Oconomowoc to Chitila | 5,163.89 mi (8,310.48 km) |
| Oconomowoc to Cisnadie | 5,041.99 mi (8,114.30 km) |
| Oconomowoc to Cluj-Napoca | 4,971.37 mi (8,000.65 km) |
| Oconomowoc to Codlea | 5,086.46 mi (8,185.87 km) |
| Oconomowoc to Comanesti | 5,083.38 mi (8,180.91 km) |
| Oconomowoc to Comarnic | 5,115.07 mi (8,231.90 km) |
| Oconomowoc to Constanta | 5,270.18 mi (8,481.53 km) |
| Oconomowoc to Corabia | 5,149.66 mi (8,287.58 km) |
| Oconomowoc to Costesti | 5,118.28 mi (8,237.08 km) |
| Oconomowoc to Covasna | 5,103.64 mi (8,213.52 km) |
| Oconomowoc to Craiova | 5,098.18 mi (8,204.73 km) |
| Oconomowoc to Cristuru Secuiesc | 5,043.34 mi (8,116.47 km) |
| Oconomowoc to Cugir | 5,008.76 mi (8,060.82 km) |
| Oconomowoc to Cumpana | 5,270.37 mi (8,481.84 km) |
