| SeaTac to Cloverleaf (Texas) | 1,888.70 mi (3,039.58 km) |
| SeaTac to Cloverly (Maryland) | 2,315.40 mi (3,726.27 km) |
| SeaTac to Clovis (California) | 745.56 mi (1,199.86 km) |
| SeaTac to Clovis (New Mexico) | 1,335.70 mi (2,149.60 km) |
| SeaTac to Clute (Texas) | 1,919.10 mi (3,088.50 km) |
| SeaTac to Coachella (California) | 1,002.90 mi (1,614.01 km) |
| SeaTac to Coalinga (California) | 787.44 mi (1,267.27 km) |
| SeaTac to Coamo (Puerto Rico) | 3,726.61 mi (5,997.41 km) |
| SeaTac to Coatesville (Pennsylvania) | 2,341.04 mi (3,767.54 km) |
| SeaTac to Cockeysville (Maryland) | 2,320.05 mi (3,733.76 km) |
| SeaTac to Cocoa (Florida) | 2,576.52 mi (4,146.50 km) |
| SeaTac to Cocoa Beach (Florida) | 2,585.11 mi (4,160.34 km) |
| SeaTac to Coconut Creek (Florida) | 2,701.95 mi (4,348.37 km) |
| SeaTac to Coeur d'Alene (Idaho) | 257.17 mi (413.88 km) |
| SeaTac to Cohoes (New York) | 2,352.27 mi (3,785.62 km) |
