| Hilo to Castle Pines (Colorado) | 3,262.11 mi (5,249.86 km) |
| Hilo to Castle Rock (Colorado) | 3,262.02 mi (5,249.71 km) |
| Hilo to Castro Valley (California) | 2,338.04 mi (3,762.71 km) |
| Hilo to Catalina Foothills (Arizona) | 2,857.86 mi (4,599.28 km) |
| Hilo to Cataño (Puerto Rico) | 5,730.07 mi (9,221.66 km) |
| Hilo to Cathedral City (California) | 2,556.60 mi (4,114.45 km) |
| Hilo to Catonsville (Maryland) | 4,758.37 mi (7,657.86 km) |
| Hilo to Cave Spring (Virginia) | 4,602.90 mi (7,407.65 km) |
| Hilo to Cayce (South Carolina) | 4,576.97 mi (7,365.93 km) |
| Hilo to Cayey (Puerto Rico) | 5,735.95 mi (9,231.12 km) |
| Hilo to Cedar City (Utah) | 2,802.14 mi (4,509.61 km) |
| Hilo to Cedar Falls (Iowa) | 3,928.58 mi (6,322.43 km) |
| Hilo to Cedar Hill (Texas) | 3,669.22 mi (5,905.04 km) |
| Hilo to Cedar Lake (Indiana) | 4,184.87 mi (6,734.90 km) |
| Hilo to Cedar Mill (Oregon) | 2,560.66 mi (4,120.98 km) |
