| Guaynabo to Castle Pines (Colorado) | 2,728.34 mi (4,390.84 km) |
| Guaynabo to Castle Rock (Colorado) | 2,725.37 mi (4,386.06 km) |
| Guaynabo to Castro Valley (California) | 3,604.87 mi (5,801.48 km) |
| Guaynabo to Catalina Foothills (Arizona) | 2,932.41 mi (4,719.26 km) |
| Guaynabo to Cataño (Puerto Rico) | 4.25 mi (6.85 km) |
| Guaynabo to Cathedral City (California) | 3,265.89 mi (5,255.94 km) |
| Guaynabo to Catonsville (Maryland) | 1,576.85 mi (2,537.70 km) |
| Guaynabo to Cave Spring (Virginia) | 1,550.20 mi (2,494.81 km) |
| Guaynabo to Cayce (South Carolina) | 1,415.38 mi (2,277.84 km) |
| Guaynabo to Cayey (Puerto Rico) | 18.81 mi (30.28 km) |
| Guaynabo to Cedar City (Utah) | 3,120.16 mi (5,021.41 km) |
| Guaynabo to Cedar Falls (Iowa) | 2,270.71 mi (3,654.36 km) |
| Guaynabo to Cedar Hill (Texas) | 2,148.18 mi (3,457.16 km) |
| Guaynabo to Cedar Lake (Indiana) | 2,026.33 mi (3,261.06 km) |
| Guaynabo to Cedar Mill (Oregon) | 3,719.47 mi (5,985.91 km) |
