| Gurnee to Collegno | 4,471.58 mi (7,196.31 km) |
| Gurnee to Cologno al Serio | 4,534.59 mi (7,297.72 km) |
| Gurnee to Cologno Monzese | 4,520.41 mi (7,274.90 km) |
| Gurnee to Colorno | 4,588.10 mi (7,383.83 km) |
| Gurnee to Comacchio | 4,667.83 mi (7,512.15 km) |
| Gurnee to Comiso | 5,107.60 mi (8,219.89 km) |
| Gurnee to Como | 4,501.43 mi (7,244.35 km) |
| Gurnee to Concordia Sagittaria | 4,647.88 mi (7,480.04 km) |
| Gurnee to Concorezzo | 4,520.16 mi (7,274.49 km) |
| Gurnee to Conegliano | 4,621.79 mi (7,438.06 km) |
| Gurnee to Conselice | 4,662.08 mi (7,502.89 km) |
| Gurnee to Conselve | 4,632.98 mi (7,456.05 km) |
| Gurnee to Conversano | 5,024.93 mi (8,086.85 km) |
| Gurnee to Copertino | 5,093.67 mi (8,197.47 km) |
| Gurnee to Copparo | 4,645.81 mi (7,476.70 km) |
