| Horsforth to Castle Rock (Colorado) | 4,554.91 mi (7,330.43 km) |
| Horsforth to Castro Valley (California) | 5,187.66 mi (8,348.73 km) |
| Horsforth to Catalina Foothills (Arizona) | 5,148.01 mi (8,284.92 km) |
| Horsforth to Cataño (Puerto Rico) | 4,162.37 mi (6,698.68 km) |
| Horsforth to Cathedral City (California) | 5,243.48 mi (8,438.56 km) |
| Horsforth to Catonsville (Maryland) | 3,528.20 mi (5,678.09 km) |
| Horsforth to Cave Spring (Virginia) | 3,753.58 mi (6,040.80 km) |
| Horsforth to Cayce (South Carolina) | 3,956.06 mi (6,366.66 km) |
| Horsforth to Cayey (Puerto Rico) | 4,180.74 mi (6,728.25 km) |
| Horsforth to Cedar City (Utah) | 4,917.49 mi (7,913.94 km) |
| Horsforth to Cedar Falls (Iowa) | 3,962.61 mi (6,377.21 km) |
| Horsforth to Cedar Hill (Texas) | 4,638.07 mi (7,464.26 km) |
| Horsforth to Cedar Lake (Indiana) | 3,836.40 mi (6,174.09 km) |
| Horsforth to Cedar Mill (Oregon) | 4,750.62 mi (7,645.39 km) |
| Horsforth to Cedar Park (Texas) | 4,780.93 mi (7,694.16 km) |
