| Olton to Cividale del Friuli | 812.25 mi (1,307.19 km) |
| Olton to Civita Castellana | 962.85 mi (1,549.56 km) |
| Olton to Civitanova Marche | 954.18 mi (1,535.60 km) |
| Olton to Civitavecchia | 954.49 mi (1,536.11 km) |
| Olton to Civitella in Val di Chiana | 880.71 mi (1,417.36 km) |
| Olton to Clusone | 696.50 mi (1,120.91 km) |
| Olton to Coccaglio | 713.20 mi (1,147.78 km) |
| Olton to Codigoro | 822.29 mi (1,323.35 km) |
| Olton to Codogno | 724.54 mi (1,166.04 km) |
| Olton to Codroipo | 801.19 mi (1,289.40 km) |
| Olton to Cogoleto | 732.67 mi (1,179.13 km) |
| Olton to Colle di Val d'Elsa | 862.89 mi (1,388.69 km) |
| Olton to Colle Salvetti | 831.70 mi (1,338.50 km) |
| Olton to Collecchio | 762.34 mi (1,226.86 km) |
| Olton to Colleferro | 1,012.67 mi (1,629.74 km) |
