| Olkusz to Cividale del Friuli | 403.76 mi (649.79 km) |
| Olkusz to Civita Castellana | 648.24 mi (1,043.24 km) |
| Olkusz to Civitanova Marche | 555.27 mi (893.63 km) |
| Olkusz to Civitavecchia | 675.55 mi (1,087.19 km) |
| Olkusz to Civitella in Val di Chiana | 601.38 mi (967.83 km) |
| Olkusz to Clusone | 537.21 mi (864.56 km) |
| Olkusz to Coccaglio | 550.02 mi (885.17 km) |
| Olkusz to Codigoro | 511.66 mi (823.44 km) |
| Olkusz to Codogno | 578.21 mi (930.54 km) |
| Olkusz to Codroipo | 425.50 mi (684.77 km) |
| Olkusz to Cogoleto | 652.42 mi (1,049.97 km) |
| Olkusz to Colle di Val d'Elsa | 619.56 mi (997.09 km) |
| Olkusz to Colle Salvetti | 628.90 mi (1,012.12 km) |
| Olkusz to Collecchio | 579.18 mi (932.11 km) |
| Olkusz to Colleferro | 668.39 mi (1,075.67 km) |
