| Quincy to Cadillac (Michigan) | 736.60 mi (1,185.45 km) |
| Quincy to Caguas (Puerto Rico) | 1,685.16 mi (2,712.00 km) |
| Quincy to Cahokia (Illinois) | 1,037.27 mi (1,669.32 km) |
| Quincy to Calabasas (California) | 2,612.40 mi (4,204.25 km) |
| Quincy to Caldwell (Idaho) | 2,280.88 mi (3,670.72 km) |
| Quincy to Caledonia (Wisconsin) | 857.80 mi (1,380.50 km) |
| Quincy to Calera (Alabama) | 1,063.38 mi (1,711.34 km) |
| Quincy to Calexico (California) | 2,496.65 mi (4,017.97 km) |
| Quincy to Calhoun (Georgia) | 923.27 mi (1,485.86 km) |
| Quincy to California (Maryland) | 397.28 mi (639.36 km) |
| Quincy to California City (California) | 2,540.64 mi (4,088.77 km) |
| Quincy to Callaway (Florida) | 1,162.02 mi (1,870.09 km) |
| Quincy to Calumet City (Illinois) | 849.56 mi (1,367.23 km) |
| Quincy to Calverton (Maryland) | 381.01 mi (613.18 km) |
| Quincy to Camano (Washington) | 2,489.69 mi (4,006.77 km) |
