| Boulder City to Cernavoda | 6,430.59 mi (10,349.04 km) |
| Boulder City to Chitila | 6,369.75 mi (10,251.13 km) |
| Boulder City to Cisnadie | 6,252.19 mi (10,061.93 km) |
| Boulder City to Cluj-Napoca | 6,176.15 mi (9,939.55 km) |
| Boulder City to Codlea | 6,285.83 mi (10,116.07 km) |
| Boulder City to Comanesti | 6,267.00 mi (10,085.77 km) |
| Boulder City to Comarnic | 6,317.00 mi (10,166.23 km) |
| Boulder City to Constanta | 6,455.36 mi (10,388.89 km) |
| Boulder City to Corabia | 6,375.03 mi (10,259.62 km) |
| Boulder City to Costesti | 6,332.15 mi (10,190.62 km) |
| Boulder City to Covasna | 6,295.13 mi (10,131.04 km) |
| Boulder City to Craiova | 6,324.15 mi (10,177.74 km) |
| Boulder City to Cristuru Secuiesc | 6,240.53 mi (10,043.16 km) |
| Boulder City to Cugir | 6,224.26 mi (10,016.98 km) |
| Boulder City to Cumpana | 6,456.76 mi (10,391.16 km) |
