| Boston to Cernavoda | 1,400.70 mi (2,254.22 km) |
| Boston to Chitila | 1,311.40 mi (2,110.50 km) |
| Boston to Cisnadie | 1,190.62 mi (1,916.12 km) |
| Boston to Cluj-Napoca | 1,128.75 mi (1,816.55 km) |
| Boston to Codlea | 1,243.34 mi (2,000.97 km) |
| Boston to Comanesti | 1,257.53 mi (2,023.81 km) |
| Boston to Comarnic | 1,268.11 mi (2,040.82 km) |
| Boston to Constanta | 1,431.78 mi (2,304.22 km) |
| Boston to Corabia | 1,283.42 mi (2,065.46 km) |
| Boston to Costesti | 1,260.92 mi (2,029.25 km) |
| Boston to Covasna | 1,267.72 mi (2,040.20 km) |
| Boston to Craiova | 1,232.77 mi (1,983.94 km) |
| Boston to Cristuru Secuiesc | 1,204.77 mi (1,938.90 km) |
| Boston to Cugir | 1,154.05 mi (1,857.26 km) |
| Boston to Cumpana | 1,430.80 mi (2,302.65 km) |
