| Oskaloosa to Cortona | 4,953.07 mi (7,971.20 km) |
| Oskaloosa to Cosenza | 5,300.78 mi (8,530.78 km) |
| Oskaloosa to Cossato | 4,706.98 mi (7,575.15 km) |
| Oskaloosa to Costa Volpino | 4,769.48 mi (7,675.74 km) |
| Oskaloosa to Creazzo | 4,834.46 mi (7,780.31 km) |
| Oskaloosa to Crema | 4,773.54 mi (7,682.27 km) |
| Oskaloosa to Cremona | 4,796.89 mi (7,719.85 km) |
| Oskaloosa to Crevalcore | 4,857.50 mi (7,817.39 km) |
| Oskaloosa to Crispiano | 5,277.22 mi (8,492.87 km) |
| Oskaloosa to Crosia | 5,308.27 mi (8,542.83 km) |
| Oskaloosa to Crotone | 5,344.82 mi (8,601.65 km) |
| Oskaloosa to Cuneo | 4,732.61 mi (7,616.39 km) |
| Oskaloosa to Cuorgne | 4,694.43 mi (7,554.95 km) |
| Oskaloosa to Cusano Milanino | 4,746.65 mi (7,638.99 km) |
| Oskaloosa to Cutro | 5,342.00 mi (8,597.12 km) |
