| Gretz-Armainvilliers to Carlsbad (New Mexico) | 5,257.82 mi (8,461.65 km) |
| Gretz-Armainvilliers to Carmel (Indiana) | 4,178.74 mi (6,725.03 km) |
| Gretz-Armainvilliers to Carmichael (California) | 5,498.71 mi (8,849.31 km) |
| Gretz-Armainvilliers to Carney (Maryland) | 3,806.89 mi (6,126.59 km) |
| Gretz-Armainvilliers to Carnot-Moon (Pennsylvania) | 3,913.37 mi (6,297.96 km) |
| Gretz-Armainvilliers to Carol Stream (Illinois) | 4,169.31 mi (6,709.85 km) |
| Gretz-Armainvilliers to Carolina (Puerto Rico) | 4,305.98 mi (6,929.81 km) |
| Gretz-Armainvilliers to Carolina Forest (South Carolina) | 4,157.26 mi (6,690.46 km) |
| Gretz-Armainvilliers to Carpentersville (Illinois) | 4,166.29 mi (6,705.00 km) |
| Gretz-Armainvilliers to Carpinteria (California) | 5,685.01 mi (9,149.14 km) |
| Gretz-Armainvilliers to Carrboro (North Carolina) | 4,067.27 mi (6,545.64 km) |
| Gretz-Armainvilliers to Carroll (Iowa) | 4,419.39 mi (7,112.32 km) |
| Gretz-Armainvilliers to Carrollton (Georgia) | 4,429.22 mi (7,128.15 km) |
| Gretz-Armainvilliers to Carrollton (Texas) | 4,942.56 mi (7,954.28 km) |
| Gretz-Armainvilliers to Carrollwood (Florida) | 4,581.57 mi (7,373.33 km) |
