| SeaTac to Cullman (Alabama) | 2,044.75 mi (3,290.71 km) |
| SeaTac to Culpeper (Virginia) | 2,290.54 mi (3,686.27 km) |
| SeaTac to Culver City (California) | 950.40 mi (1,529.52 km) |
| SeaTac to Cumberland (Maryland) | 2,214.99 mi (3,564.68 km) |
| SeaTac to Cupertino (California) | 699.87 mi (1,126.33 km) |
| SeaTac to Cutler Bay (Florida) | 2,729.23 mi (4,392.26 km) |
| SeaTac to Cutlerville (Michigan) | 1,795.83 mi (2,890.11 km) |
| SeaTac to Cuyahoga Falls (Ohio) | 2,037.87 mi (3,279.64 km) |
| SeaTac to Cypress (California) | 967.29 mi (1,556.71 km) |
| SeaTac to Cypress Gardens (Florida) | 2,553.04 mi (4,108.72 km) |
| SeaTac to Cypress Lake (Florida) | 2,613.36 mi (4,205.80 km) |
| SeaTac to D'Iberville (Mississippi) | 2,118.57 mi (3,409.51 km) |
| SeaTac to Dakota Ridge (Colorado) | 1,012.26 mi (1,629.07 km) |
| SeaTac to Dale City (Virginia) | 2,314.96 mi (3,725.57 km) |
| SeaTac to Dallas (Georgia) | 2,146.80 mi (3,454.94 km) |
