| Middlesex to Castle Pines (Colorado) | 1,600.85 mi (2,576.32 km) |
| Middlesex to Castle Rock (Colorado) | 1,601.26 mi (2,576.98 km) |
| Middlesex to Castro Valley (California) | 2,525.40 mi (4,064.23 km) |
| Middlesex to Catalina Foothills (Arizona) | 2,085.17 mi (3,355.75 km) |
| Middlesex to Cataño (Puerto Rico) | 1,607.99 mi (2,587.81 km) |
| Middlesex to Cathedral City (California) | 2,333.04 mi (3,754.66 km) |
| Middlesex to Catonsville (Maryland) | 149.31 mi (240.29 km) |
| Middlesex to Cave Spring (Virginia) | 375.63 mi (604.52 km) |
| Middlesex to Cayce (South Carolina) | 581.99 mi (936.63 km) |
| Middlesex to Cayey (Puerto Rico) | 1,629.05 mi (2,621.70 km) |
| Middlesex to Cedar City (Utah) | 2,061.64 mi (3,317.89 km) |
| Middlesex to Cedar Falls (Iowa) | 936.20 mi (1,506.66 km) |
| Middlesex to Cedar Hill (Texas) | 1,357.92 mi (2,185.36 km) |
| Middlesex to Cedar Lake (Indiana) | 676.53 mi (1,088.77 km) |
| Middlesex to Cedar Mill (Oregon) | 2,425.22 mi (3,903.01 km) |
