| Castricum to Cloverly (Maryland) | 3,821.52 mi (6,150.15 km) |
| Castricum to Clovis (California) | 5,416.28 mi (8,716.67 km) |
| Castricum to Clovis (New Mexico) | 5,032.30 mi (8,098.71 km) |
| Castricum to Clute (Texas) | 5,044.20 mi (8,117.85 km) |
| Castricum to Coachella (California) | 5,496.94 mi (8,846.48 km) |
| Castricum to Coalinga (California) | 5,475.21 mi (8,811.49 km) |
| Castricum to Coamo (Puerto Rico) | 4,440.16 mi (7,145.74 km) |
| Castricum to Coatesville (Pennsylvania) | 3,734.18 mi (6,009.58 km) |
| Castricum to Cockeysville (Maryland) | 3,789.44 mi (6,098.52 km) |
| Castricum to Cocoa (Florida) | 4,502.68 mi (7,246.36 km) |
| Castricum to Cocoa Beach (Florida) | 4,499.52 mi (7,241.28 km) |
| Castricum to Coconut Creek (Florida) | 4,587.43 mi (7,382.75 km) |
| Castricum to Coeur d'Alene (Idaho) | 4,702.42 mi (7,567.82 km) |
| Castricum to Cohoes (New York) | 3,525.02 mi (5,672.98 km) |
| Castricum to Cold Springs (Nevada) | 5,254.69 mi (8,456.60 km) |
