| Prospect Heights to Cividale del Friuli | 4,667.67 mi (7,511.89 km) |
| Prospect Heights to Civita Castellana | 4,791.30 mi (7,710.84 km) |
| Prospect Heights to Civitanova Marche | 4,799.91 mi (7,724.71 km) |
| Prospect Heights to Civitavecchia | 4,775.35 mi (7,685.19 km) |
| Prospect Heights to Civitella in Val di Chiana | 4,715.69 mi (7,589.17 km) |
| Prospect Heights to Clusone | 4,543.52 mi (7,312.09 km) |
| Prospect Heights to Coccaglio | 4,557.73 mi (7,334.95 km) |
| Prospect Heights to Codigoro | 4,671.18 mi (7,517.53 km) |
| Prospect Heights to Codogno | 4,563.60 mi (7,344.40 km) |
| Prospect Heights to Codroipo | 4,656.35 mi (7,493.68 km) |
| Prospect Heights to Cogoleto | 4,553.24 mi (7,327.74 km) |
| Prospect Heights to Colle di Val d'Elsa | 4,693.29 mi (7,553.12 km) |
| Prospect Heights to Colle Salvetti | 4,659.04 mi (7,498.00 km) |
| Prospect Heights to Collecchio | 4,600.58 mi (7,403.91 km) |
| Prospect Heights to Colleferro | 4,839.96 mi (7,789.17 km) |
