| Rockwall to Castle Pines (Colorado) | 651.85 mi (1,049.06 km) |
| Rockwall to Castle Rock (Colorado) | 647.25 mi (1,041.64 km) |
| Rockwall to Castro Valley (California) | 1,477.21 mi (2,377.34 km) |
| Rockwall to Catalina Foothills (Arizona) | 841.20 mi (1,353.78 km) |
| Rockwall to Cataño (Puerto Rico) | 2,123.92 mi (3,418.12 km) |
| Rockwall to Cathedral City (California) | 1,155.43 mi (1,859.48 km) |
| Rockwall to Catonsville (Maryland) | 1,180.76 mi (1,900.24 km) |
| Rockwall to Cave Spring (Virginia) | 974.11 mi (1,567.67 km) |
| Rockwall to Cayce (South Carolina) | 889.67 mi (1,431.79 km) |
| Rockwall to Cayey (Puerto Rico) | 2,135.45 mi (3,436.67 km) |
| Rockwall to Cedar City (Utah) | 993.72 mi (1,599.23 km) |
| Rockwall to Cedar Falls (Iowa) | 698.06 mi (1,123.42 km) |
| Rockwall to Cedar Hill (Texas) | 38.18 mi (61.44 km) |
| Rockwall to Cedar Lake (Indiana) | 765.06 mi (1,231.24 km) |
| Rockwall to Cedar Mill (Oregon) | 1,647.06 mi (2,650.68 km) |
