| Horsforth to Carson (California) | 5,299.67 mi (8,529.00 km) |
| Horsforth to Carson City (Nevada) | 5,036.40 mi (8,105.30 km) |
| Horsforth to Carteret (New Jersey) | 3,368.25 mi (5,420.67 km) |
| Horsforth to Cartersville (Georgia) | 4,092.61 mi (6,586.43 km) |
| Horsforth to Carthage (Missouri) | 4,301.25 mi (6,922.19 km) |
| Horsforth to Cary (Illinois) | 3,825.51 mi (6,156.56 km) |
| Horsforth to Cary (North Carolina) | 3,777.25 mi (6,078.90 km) |
| Horsforth to Casa de Oro-Mount Helix (California) | 5,321.38 mi (8,563.93 km) |
| Horsforth to Casa Grande (Arizona) | 5,143.50 mi (8,277.67 km) |
| Horsforth to Casas Adobes (Arizona) | 5,150.19 mi (8,288.43 km) |
| Horsforth to Cascades (Virginia) | 3,563.76 mi (5,735.32 km) |
| Horsforth to Casper (Wyoming) | 4,417.68 mi (7,109.58 km) |
| Horsforth to Casselberry (Florida) | 4,236.39 mi (6,817.81 km) |
| Horsforth to Castaic (California) | 5,273.88 mi (8,487.49 km) |
| Horsforth to Castle Pines (Colorado) | 4,550.86 mi (7,323.90 km) |
