| Onalaska to Cividale del Friuli | 4,704.29 mi (7,570.82 km) |
| Onalaska to Civita Castellana | 4,840.72 mi (7,790.38 km) |
| Onalaska to Civitanova Marche | 4,844.11 mi (7,795.85 km) |
| Onalaska to Civitavecchia | 4,826.42 mi (7,767.38 km) |
| Onalaska to Civitella in Val di Chiana | 4,763.11 mi (7,665.49 km) |
| Onalaska to Clusone | 4,586.61 mi (7,381.44 km) |
| Onalaska to Coccaglio | 4,601.74 mi (7,405.79 km) |
| Onalaska to Codigoro | 4,713.77 mi (7,586.08 km) |
| Onalaska to Codogno | 4,609.29 mi (7,417.93 km) |
| Onalaska to Codroipo | 4,694.14 mi (7,554.49 km) |
| Onalaska to Cogoleto | 4,603.03 mi (7,407.86 km) |
| Onalaska to Colle di Val d'Elsa | 4,741.78 mi (7,631.15 km) |
| Onalaska to Colle Salvetti | 4,708.07 mi (7,576.90 km) |
| Onalaska to Collecchio | 4,646.64 mi (7,478.05 km) |
| Onalaska to Colleferro | 4,889.89 mi (7,869.52 km) |
