| Gretz-Armainvilliers to Cloverly (Maryland) | 3,839.66 mi (6,179.33 km) |
| Gretz-Armainvilliers to Clovis (California) | 5,551.66 mi (8,934.54 km) |
| Gretz-Armainvilliers to Clovis (New Mexico) | 5,111.95 mi (8,226.89 km) |
| Gretz-Armainvilliers to Clute (Texas) | 5,081.81 mi (8,178.39 km) |
| Gretz-Armainvilliers to Coachella (California) | 5,614.30 mi (9,035.34 km) |
| Gretz-Armainvilliers to Coalinga (California) | 5,610.88 mi (9,029.83 km) |
| Gretz-Armainvilliers to Coamo (Puerto Rico) | 4,339.86 mi (6,984.33 km) |
| Gretz-Armainvilliers to Coatesville (Pennsylvania) | 3,752.82 mi (6,039.57 km) |
| Gretz-Armainvilliers to Cockeysville (Maryland) | 3,808.16 mi (6,128.64 km) |
| Gretz-Armainvilliers to Cocoa (Florida) | 4,489.40 mi (7,224.99 km) |
| Gretz-Armainvilliers to Cocoa Beach (Florida) | 4,485.59 mi (7,218.86 km) |
| Gretz-Armainvilliers to Coconut Creek (Florida) | 4,564.48 mi (7,345.82 km) |
| Gretz-Armainvilliers to Coeur d'Alene (Idaho) | 4,856.30 mi (7,815.47 km) |
| Gretz-Armainvilliers to Cohoes (New York) | 3,550.86 mi (5,714.55 km) |
| Gretz-Armainvilliers to Cold Springs (Nevada) | 5,397.49 mi (8,686.41 km) |
