| Oulu to Civita Castellana | 1,650.56 mi (2,656.33 km) |
| Oulu to Civitanova Marche | 1,567.66 mi (2,522.91 km) |
| Oulu to Civitavecchia | 1,671.20 mi (2,689.54 km) |
| Oulu to Civitella in Val di Chiana | 1,584.19 mi (2,549.51 km) |
| Oulu to Clusone | 1,445.78 mi (2,326.76 km) |
| Oulu to Coccaglio | 1,466.35 mi (2,359.85 km) |
| Oulu to Codigoro | 1,484.54 mi (2,389.13 km) |
| Oulu to Codogno | 1,496.96 mi (2,409.12 km) |
| Oulu to Codroipo | 1,398.21 mi (2,250.20 km) |
| Oulu to Cogoleto | 1,563.83 mi (2,516.74 km) |
| Oulu to Colle di Val d'Elsa | 1,592.99 mi (2,563.67 km) |
| Oulu to Colle Salvetti | 1,588.60 mi (2,556.61 km) |
| Oulu to Collecchio | 1,516.33 mi (2,440.30 km) |
| Oulu to Colleferro | 1,681.31 mi (2,705.81 km) |
| Oulu to Collegno | 1,536.36 mi (2,472.54 km) |
