| Downers Grove to Collegno | 4,499.78 mi (7,241.70 km) |
| Downers Grove to Cologno al Serio | 4,563.48 mi (7,344.21 km) |
| Downers Grove to Cologno Monzese | 4,549.19 mi (7,321.21 km) |
| Downers Grove to Colorno | 4,616.87 mi (7,430.13 km) |
| Downers Grove to Comacchio | 4,696.91 mi (7,558.95 km) |
| Downers Grove to Comiso | 5,134.13 mi (8,262.58 km) |
| Downers Grove to Como | 4,530.28 mi (7,290.79 km) |
| Downers Grove to Concordia Sagittaria | 4,677.53 mi (7,527.76 km) |
| Downers Grove to Concorezzo | 4,548.97 mi (7,320.86 km) |
| Downers Grove to Conegliano | 4,651.38 mi (7,485.67 km) |
| Downers Grove to Conselice | 4,691.00 mi (7,549.44 km) |
| Downers Grove to Conselve | 4,662.20 mi (7,503.08 km) |
| Downers Grove to Conversano | 5,053.72 mi (8,133.18 km) |
| Downers Grove to Copertino | 5,122.43 mi (8,243.76 km) |
| Downers Grove to Copparo | 4,674.88 mi (7,523.50 km) |
