| Oulu to Ciampino | 1,681.64 mi (2,706.34 km) |
| Oulu to Cicciano | 1,716.95 mi (2,763.16 km) |
| Oulu to Cingoli | 1,569.08 mi (2,525.19 km) |
| Oulu to Cinisello Balsamo | 1,478.93 mi (2,380.11 km) |
| Oulu to Cinisi | 1,921.48 mi (3,092.33 km) |
| Oulu to Cirie | 1,525.66 mi (2,455.31 km) |
| Oulu to Ciro Marina | 1,803.24 mi (2,902.04 km) |
| Oulu to Cislago | 1,476.35 mi (2,375.95 km) |
| Oulu to Cisterna di Latina | 1,693.07 mi (2,724.73 km) |
| Oulu to Cisternino | 1,707.67 mi (2,748.23 km) |
| Oulu to Citta di Castello | 1,574.53 mi (2,533.97 km) |
| Oulu to Citta Sant'Angelo | 1,617.03 mi (2,602.35 km) |
| Oulu to Cittadella | 1,434.71 mi (2,308.95 km) |
| Oulu to Cittanova | 1,881.08 mi (3,027.31 km) |
| Oulu to Cividale del Friuli | 1,383.36 mi (2,226.30 km) |
