| Illkirch-Graffenstaden to Carlsbad (New Mexico) | 5,451.85 mi (8,773.90 km) |
| Illkirch-Graffenstaden to Carmel (Indiana) | 4,383.56 mi (7,054.66 km) |
| Illkirch-Graffenstaden to Carmichael (California) | 5,654.68 mi (9,100.32 km) |
| Illkirch-Graffenstaden to Carney (Maryland) | 4,021.12 mi (6,471.37 km) |
| Illkirch-Graffenstaden to Carnot-Moon (Pennsylvania) | 4,123.01 mi (6,635.34 km) |
| Illkirch-Graffenstaden to Carol Stream (Illinois) | 4,369.02 mi (7,031.25 km) |
| Illkirch-Graffenstaden to Carolina (Puerto Rico) | 4,533.19 mi (7,295.47 km) |
| Illkirch-Graffenstaden to Carolina Forest (South Carolina) | 4,375.96 mi (7,042.43 km) |
| Illkirch-Graffenstaden to Carpentersville (Illinois) | 4,365.50 mi (7,025.59 km) |
| Illkirch-Graffenstaden to Carpinteria (California) | 5,851.00 mi (9,416.28 km) |
| Illkirch-Graffenstaden to Carrboro (North Carolina) | 4,283.63 mi (6,893.83 km) |
| Illkirch-Graffenstaden to Carroll (Iowa) | 4,611.08 mi (7,420.82 km) |
| Illkirch-Graffenstaden to Carrollton (Georgia) | 4,643.26 mi (7,472.60 km) |
| Illkirch-Graffenstaden to Carrollton (Texas) | 5,145.24 mi (8,280.46 km) |
| Illkirch-Graffenstaden to Carrollwood (Florida) | 4,802.66 mi (7,729.14 km) |
