| Allentown to Cernavoda | 4,895.78 mi (7,878.99 km) |
| Allentown to Chitila | 4,808.78 mi (7,738.98 km) |
| Allentown to Cisnadie | 4,687.45 mi (7,543.71 km) |
| Allentown to Cluj-Napoca | 4,622.90 mi (7,439.85 km) |
| Allentown to Codlea | 4,738.30 mi (7,625.56 km) |
| Allentown to Comanesti | 4,746.41 mi (7,638.61 km) |
| Allentown to Comarnic | 4,764.21 mi (7,667.26 km) |
| Allentown to Constanta | 4,926.33 mi (7,928.16 km) |
| Allentown to Corabia | 4,781.00 mi (7,694.28 km) |
| Allentown to Costesti | 4,758.81 mi (7,658.57 km) |
| Allentown to Covasna | 4,760.52 mi (7,661.32 km) |
| Allentown to Craiova | 4,730.57 mi (7,613.12 km) |
| Allentown to Cristuru Secuiesc | 4,698.06 mi (7,560.80 km) |
| Allentown to Cugir | 4,651.40 mi (7,485.71 km) |
| Allentown to Cumpana | 4,925.68 mi (7,927.12 km) |
