| Grayslake to Cognac | 4,133.30 mi (6,651.91 km) |
| Grayslake to Cogolin | 4,508.25 mi (7,255.33 km) |
| Grayslake to Colmar | 4,349.30 mi (6,999.52 km) |
| Grayslake to Colombes | 4,121.28 mi (6,632.57 km) |
| Grayslake to Colomiers | 4,279.26 mi (6,886.80 km) |
| Grayslake to Combs-la-Ville | 4,142.35 mi (6,666.46 km) |
| Grayslake to Comines | 4,085.16 mi (6,574.42 km) |
| Grayslake to Compiegne | 4,125.83 mi (6,639.88 km) |
| Grayslake to Concarneau | 3,911.13 mi (6,294.35 km) |
| Grayslake to Conde-sur-l'Escaut | 4,118.14 mi (6,627.51 km) |
| Grayslake to Conflans-Sainte-Honorine | 4,112.61 mi (6,618.61 km) |
| Grayslake to Corbas | 4,346.93 mi (6,995.71 km) |
| Grayslake to Corbeil-Essonnes | 4,141.32 mi (6,664.81 km) |
| Grayslake to Cormeilles-en-Parisis | 4,117.52 mi (6,626.50 km) |
| Grayslake to Cosne sur Loire | 4,202.51 mi (6,763.28 km) |
