| Mercer Island to Conyers (Georgia) | 2,194.58 mi (3,531.84 km) |
| Mercer Island to Cookeville (Tennessee) | 2,024.29 mi (3,257.78 km) |
| Mercer Island to Coolidge (Arizona) | 1,155.28 mi (1,859.24 km) |
| Mercer Island to Coon Rapids (Minnesota) | 1,380.58 mi (2,221.83 km) |
| Mercer Island to Cooper City (Florida) | 2,708.33 mi (4,358.63 km) |
| Mercer Island to Coos Bay (Oregon) | 305.09 mi (491.00 km) |
| Mercer Island to Copiague (New York) | 2,427.39 mi (3,906.51 km) |
| Mercer Island to Coppell (Texas) | 1,657.27 mi (2,667.12 km) |
| Mercer Island to Copperas Cove (Texas) | 1,713.01 mi (2,756.82 km) |
| Mercer Island to Coral Gables (Florida) | 2,725.60 mi (4,386.43 km) |
| Mercer Island to Coral Springs (Florida) | 2,698.71 mi (4,343.15 km) |
| Mercer Island to Coral Terrace (Florida) | 2,722.05 mi (4,380.71 km) |
| Mercer Island to Coralville (Iowa) | 1,548.73 mi (2,492.43 km) |
| Mercer Island to Coram (New York) | 2,438.44 mi (3,924.29 km) |
| Mercer Island to Corcoran (California) | 805.02 mi (1,295.56 km) |
