| Ostrow Mazowiecka to Cividale del Friuli | 598.28 mi (962.84 km) |
| Ostrow Mazowiecka to Civita Castellana | 848.42 mi (1,365.40 km) |
| Ostrow Mazowiecka to Civitanova Marche | 755.94 mi (1,216.57 km) |
| Ostrow Mazowiecka to Civitavecchia | 875.21 mi (1,408.51 km) |
| Ostrow Mazowiecka to Civitella in Val di Chiana | 798.99 mi (1,285.85 km) |
| Ostrow Mazowiecka to Clusone | 717.91 mi (1,155.37 km) |
| Ostrow Mazowiecka to Coccaglio | 733.06 mi (1,179.75 km) |
| Ostrow Mazowiecka to Codigoro | 706.58 mi (1,137.14 km) |
| Ostrow Mazowiecka to Codogno | 762.60 mi (1,227.29 km) |
| Ostrow Mazowiecka to Codroipo | 618.91 mi (996.03 km) |
| Ostrow Mazowiecka to Cogoleto | 836.90 mi (1,346.86 km) |
| Ostrow Mazowiecka to Colle di Val d'Elsa | 815.85 mi (1,312.99 km) |
| Ostrow Mazowiecka to Colle Salvetti | 822.90 mi (1,324.33 km) |
| Ostrow Mazowiecka to Collecchio | 767.81 mi (1,235.66 km) |
| Ostrow Mazowiecka to Colleferro | 869.20 mi (1,398.84 km) |
