| Quincy to Conyers (Georgia) | 921.05 mi (1,482.28 km) |
| Quincy to Cookeville (Tennessee) | 881.43 mi (1,418.52 km) |
| Quincy to Coolidge (Arizona) | 2,285.51 mi (3,678.17 km) |
| Quincy to Coon Rapids (Minnesota) | 1,127.65 mi (1,814.78 km) |
| Quincy to Cooper City (Florida) | 1,236.80 mi (1,990.43 km) |
| Quincy to Coos Bay (Oregon) | 2,651.41 mi (4,267.04 km) |
| Quincy to Copiague (New York) | 164.36 mi (264.52 km) |
| Quincy to Coppell (Texas) | 1,551.55 mi (2,496.97 km) |
| Quincy to Copperas Cove (Texas) | 1,666.99 mi (2,682.77 km) |
| Quincy to Coral Gables (Florida) | 1,258.30 mi (2,025.04 km) |
| Quincy to Coral Springs (Florida) | 1,221.90 mi (1,966.45 km) |
| Quincy to Coral Terrace (Florida) | 1,256.37 mi (2,021.93 km) |
| Quincy to Coralville (Iowa) | 1,055.14 mi (1,698.08 km) |
| Quincy to Coram (New York) | 139.65 mi (224.75 km) |
| Quincy to Corcoran (California) | 2,599.41 mi (4,183.34 km) |
