| Arecibo to Cividale del Friuli | 4,843.77 mi (7,795.29 km) |
| Arecibo to Civita Castellana | 4,823.71 mi (7,763.01 km) |
| Arecibo to Civitanova Marche | 4,881.55 mi (7,856.10 km) |
| Arecibo to Civitavecchia | 4,794.31 mi (7,715.70 km) |
| Arecibo to Civitella in Val di Chiana | 4,780.00 mi (7,692.67 km) |
| Arecibo to Clusone | 4,678.57 mi (7,529.42 km) |
| Arecibo to Coccaglio | 4,681.47 mi (7,534.10 km) |
| Arecibo to Codigoro | 4,789.56 mi (7,708.04 km) |
| Arecibo to Codogno | 4,670.22 mi (7,515.99 km) |
| Arecibo to Codroipo | 4,823.13 mi (7,762.07 km) |
| Arecibo to Cogoleto | 4,621.98 mi (7,438.36 km) |
| Arecibo to Colle di Val d'Elsa | 4,751.00 mi (7,645.99 km) |
| Arecibo to Colle Salvetti | 4,717.25 mi (7,591.68 km) |
| Arecibo to Collecchio | 4,697.30 mi (7,559.57 km) |
| Arecibo to Colleferro | 4,859.52 mi (7,820.64 km) |
