| Arecibo to Carson (California) | 3,330.30 mi (5,359.60 km) |
| Arecibo to Carson City (Nevada) | 3,456.54 mi (5,562.77 km) |
| Arecibo to Carteret (New Jersey) | 1,592.77 mi (2,563.31 km) |
| Arecibo to Cartersville (Georgia) | 1,553.98 mi (2,500.88 km) |
| Arecibo to Carthage (Missouri) | 2,110.21 mi (3,396.05 km) |
| Arecibo to Cary (Illinois) | 2,070.79 mi (3,332.62 km) |
| Arecibo to Cary (North Carolina) | 1,406.49 mi (2,263.52 km) |
| Arecibo to Casa de Oro-Mount Helix (California) | 3,249.82 mi (5,230.07 km) |
| Arecibo to Casa Grande (Arizona) | 2,950.74 mi (4,748.75 km) |
| Arecibo to Casas Adobes (Arizona) | 2,901.85 mi (4,670.08 km) |
| Arecibo to Cascades (Virginia) | 1,559.67 mi (2,510.04 km) |
| Arecibo to Casper (Wyoming) | 2,853.61 mi (4,592.44 km) |
| Arecibo to Casselberry (Florida) | 1,160.50 mi (1,867.65 km) |
| Arecibo to Castaic (California) | 3,355.75 mi (5,400.56 km) |
| Arecibo to Castle Pines (Colorado) | 2,694.27 mi (4,336.01 km) |
