| Oregon to Cividale del Friuli | 4,515.78 mi (7,267.44 km) |
| Oregon to Civita Castellana | 4,628.09 mi (7,448.19 km) |
| Oregon to Civitanova Marche | 4,641.11 mi (7,469.14 km) |
| Oregon to Civitavecchia | 4,610.80 mi (7,420.37 km) |
| Oregon to Civitella in Val di Chiana | 4,554.34 mi (7,329.50 km) |
| Oregon to Clusone | 4,386.29 mi (7,059.06 km) |
| Oregon to Coccaglio | 4,399.67 mi (7,080.58 km) |
| Oregon to Codigoro | 4,514.07 mi (7,264.69 km) |
| Oregon to Codogno | 4,404.08 mi (7,087.69 km) |
| Oregon to Codroipo | 4,503.45 mi (7,247.61 km) |
| Oregon to Cogoleto | 4,390.28 mi (7,065.47 km) |
| Oregon to Colle di Val d'Elsa | 4,531.09 mi (7,292.09 km) |
| Oregon to Colle Salvetti | 4,496.47 mi (7,236.37 km) |
| Oregon to Collecchio | 4,440.65 mi (7,146.54 km) |
| Oregon to Colleferro | 4,676.23 mi (7,525.66 km) |
