| Sedro-Woolley to Castle Pines (Colorado) | 1,061.68 mi (1,708.60 km) |
| Sedro-Woolley to Castle Rock (Colorado) | 1,066.33 mi (1,716.09 km) |
| Sedro-Woolley to Castro Valley (California) | 746.42 mi (1,201.25 km) |
| Sedro-Woolley to Catalina Foothills (Arizona) | 1,265.81 mi (2,037.12 km) |
| Sedro-Woolley to Cataño (Puerto Rico) | 3,732.21 mi (6,006.40 km) |
| Sedro-Woolley to Cathedral City (California) | 1,056.60 mi (1,700.44 km) |
| Sedro-Woolley to Catonsville (Maryland) | 2,316.20 mi (3,727.57 km) |
| Sedro-Woolley to Cave Spring (Virginia) | 2,242.65 mi (3,609.19 km) |
| Sedro-Woolley to Cayce (South Carolina) | 2,329.07 mi (3,748.28 km) |
| Sedro-Woolley to Cayey (Puerto Rico) | 3,747.73 mi (6,031.39 km) |
| Sedro-Woolley to Cedar City (Utah) | 877.30 mi (1,411.88 km) |
| Sedro-Woolley to Cedar Falls (Iowa) | 1,489.35 mi (2,396.88 km) |
| Sedro-Woolley to Cedar Hill (Texas) | 1,709.84 mi (2,751.73 km) |
| Sedro-Woolley to Cedar Lake (Indiana) | 1,754.76 mi (2,824.01 km) |
| Sedro-Woolley to Cedar Mill (Oregon) | 207.34 mi (333.67 km) |
