| Middlesex to Cadillac (Michigan) | 611.33 mi (983.83 km) |
| Middlesex to Caguas (Puerto Rico) | 1,623.56 mi (2,612.86 km) |
| Middlesex to Cahokia (Illinois) | 845.32 mi (1,360.41 km) |
| Middlesex to Calabasas (California) | 2,440.15 mi (3,927.05 km) |
| Middlesex to Caldwell (Idaho) | 2,148.02 mi (3,456.91 km) |
| Middlesex to Caledonia (Wisconsin) | 706.22 mi (1,136.55 km) |
| Middlesex to Calera (Alabama) | 848.99 mi (1,366.32 km) |
| Middlesex to Calexico (California) | 2,315.44 mi (3,726.34 km) |
| Middlesex to Calhoun (Georgia) | 708.90 mi (1,140.86 km) |
| Middlesex to California (Maryland) | 189.94 mi (305.68 km) |
| Middlesex to California City (California) | 2,370.91 mi (3,815.61 km) |
| Middlesex to Callaway (Florida) | 951.47 mi (1,531.25 km) |
| Middlesex to Calumet City (Illinois) | 682.61 mi (1,098.56 km) |
| Middlesex to Calverton (Maryland) | 166.88 mi (268.58 km) |
| Middlesex to Camano (Washington) | 2,385.77 mi (3,839.53 km) |
