| National City to Castle Pines (Colorado) | 827.61 mi (1,331.91 km) |
| National City to Castle Rock (Colorado) | 825.36 mi (1,328.29 km) |
| National City to Castro Valley (California) | 447.07 mi (719.48 km) |
| National City to Catalina Foothills (Arizona) | 363.00 mi (584.19 km) |
| National City to Cataño (Puerto Rico) | 3,291.60 mi (5,297.33 km) |
| National City to Cathedral City (California) | 88.80 mi (142.92 km) |
| National City to Catonsville (Maryland) | 2,282.95 mi (3,674.05 km) |
| National City to Cave Spring (Virginia) | 2,110.59 mi (3,396.66 km) |
| National City to Cayce (South Carolina) | 2,073.17 mi (3,336.45 km) |
| National City to Cayey (Puerto Rico) | 3,300.93 mi (5,312.33 km) |
| National City to Cedar City (Utah) | 413.79 mi (665.93 km) |
| National City to Cedar Falls (Iowa) | 1,503.65 mi (2,419.88 km) |
| National City to Cedar Hill (Texas) | 1,170.20 mi (1,883.26 km) |
| National City to Cedar Lake (Indiana) | 1,732.92 mi (2,788.87 km) |
| National City to Cedar Mill (Oregon) | 939.69 mi (1,512.29 km) |
