| SeaTac to Carlsbad (California) | 1,023.53 mi (1,647.22 km) |
| SeaTac to Carlsbad (New Mexico) | 1,405.92 mi (2,262.60 km) |
| SeaTac to Carmel (Indiana) | 1,859.61 mi (2,992.75 km) |
| SeaTac to Carmichael (California) | 610.85 mi (983.07 km) |
| SeaTac to Carney (Maryland) | 2,327.52 mi (3,745.78 km) |
| SeaTac to Carnot-Moon (Pennsylvania) | 2,118.76 mi (3,409.81 km) |
| SeaTac to Carol Stream (Illinois) | 1,706.77 mi (2,746.78 km) |
| SeaTac to Carolina (Puerto Rico) | 3,727.79 mi (5,999.31 km) |
| SeaTac to Carolina Forest (South Carolina) | 2,426.18 mi (3,904.55 km) |
| SeaTac to Carpentersville (Illinois) | 1,693.50 mi (2,725.42 km) |
| SeaTac to Carpinteria (California) | 913.04 mi (1,469.40 km) |
| SeaTac to Carrboro (North Carolina) | 2,332.70 mi (3,754.11 km) |
| SeaTac to Carroll (Iowa) | 1,388.19 mi (2,234.07 km) |
| SeaTac to Carrollton (Georgia) | 2,149.74 mi (3,459.68 km) |
| SeaTac to Carrollton (Texas) | 1,658.56 mi (2,669.19 km) |
