| Tulcea to Cloverly (Maryland) | 5,018.03 mi (8,075.73 km) |
| Tulcea to Clovis (California) | 6,438.81 mi (10,362.27 km) |
| Tulcea to Clovis (New Mexico) | 6,169.59 mi (9,929.00 km) |
| Tulcea to Clute (Texas) | 6,226.84 mi (10,021.13 km) |
| Tulcea to Coachella (California) | 6,561.15 mi (10,559.15 km) |
| Tulcea to Coalinga (California) | 6,495.94 mi (10,454.21 km) |
| Tulcea to Coamo (Puerto Rico) | 5,582.94 mi (8,984.87 km) |
| Tulcea to Coatesville (Pennsylvania) | 4,930.66 mi (7,935.13 km) |
| Tulcea to Cockeysville (Maryland) | 4,985.79 mi (8,023.86 km) |
| Tulcea to Cocoa (Florida) | 5,704.01 mi (9,179.72 km) |
| Tulcea to Cocoa Beach (Florida) | 5,700.83 mi (9,174.60 km) |
| Tulcea to Coconut Creek (Florida) | 5,787.82 mi (9,314.60 km) |
| Tulcea to Coeur d'Alene (Idaho) | 5,688.47 mi (9,154.71 km) |
| Tulcea to Cohoes (New York) | 4,719.07 mi (7,594.61 km) |
| Tulcea to Cold Springs (Nevada) | 6,260.55 mi (10,075.39 km) |
