| Gretz-Armainvilliers to Carson (California) | 5,676.10 mi (9,134.81 km) |
| Gretz-Armainvilliers to Carson City (Nevada) | 5,421.34 mi (8,724.80 km) |
| Gretz-Armainvilliers to Carteret (New Jersey) | 3,660.83 mi (5,891.53 km) |
| Gretz-Armainvilliers to Cartersville (Georgia) | 4,389.98 mi (7,064.99 km) |
| Gretz-Armainvilliers to Carthage (Missouri) | 4,634.95 mi (7,459.23 km) |
| Gretz-Armainvilliers to Cary (Illinois) | 4,160.67 mi (6,695.96 km) |
| Gretz-Armainvilliers to Cary (North Carolina) | 4,062.25 mi (6,537.55 km) |
| Gretz-Armainvilliers to Casa de Oro-Mount Helix (California) | 5,694.13 mi (9,163.82 km) |
| Gretz-Armainvilliers to Casa Grande (Arizona) | 5,506.61 mi (8,862.03 km) |
| Gretz-Armainvilliers to Casas Adobes (Arizona) | 5,510.74 mi (8,868.67 km) |
| Gretz-Armainvilliers to Cascades (Virginia) | 3,858.57 mi (6,209.77 km) |
| Gretz-Armainvilliers to Casper (Wyoming) | 4,788.90 mi (7,706.99 km) |
| Gretz-Armainvilliers to Casselberry (Florida) | 4,500.34 mi (7,242.60 km) |
| Gretz-Armainvilliers to Castaic (California) | 5,651.75 mi (9,095.62 km) |
| Gretz-Armainvilliers to Castle Pines (Colorado) | 4,913.04 mi (7,906.77 km) |
