| Onalaska to Collegno | 4,532.16 mi (7,293.81 km) |
| Onalaska to Cologno al Serio | 4,590.48 mi (7,387.67 km) |
| Onalaska to Cologno Monzese | 4,577.11 mi (7,366.14 km) |
| Onalaska to Colorno | 4,644.75 mi (7,475.00 km) |
| Onalaska to Comacchio | 4,722.28 mi (7,599.77 km) |
| Onalaska to Comiso | 5,177.83 mi (8,332.91 km) |
| Onalaska to Como | 4,557.62 mi (7,334.78 km) |
| Onalaska to Concordia Sagittaria | 4,698.34 mi (7,561.25 km) |
| Onalaska to Concorezzo | 4,576.59 mi (7,365.31 km) |
| Onalaska to Conegliano | 4,672.80 mi (7,520.14 km) |
| Onalaska to Conselice | 4,717.58 mi (7,592.21 km) |
| Onalaska to Conselve | 4,686.46 mi (7,542.13 km) |
| Onalaska to Conversano | 5,080.80 mi (8,176.77 km) |
| Onalaska to Copertino | 5,149.62 mi (8,287.51 km) |
| Onalaska to Copparo | 4,700.26 mi (7,564.34 km) |
