| Herndon to Benavente | 3,590.14 mi (5,777.78 km) |
| Herndon to Bombarral | 3,564.47 mi (5,736.45 km) |
| Herndon to Bougado | 3,539.49 mi (5,696.27 km) |
| Herndon to Braga | 3,540.78 mi (5,698.34 km) |
| Herndon to Braganca | 3,613.83 mi (5,815.90 km) |
| Herndon to Cabeceiras de Basto | 3,560.61 mi (5,730.25 km) |
| Herndon to Cacem | 3,570.36 mi (5,745.94 km) |
| Herndon to Cadaval | 3,568.13 mi (5,742.34 km) |
| Herndon to Caldas da Rainha | 3,561.70 mi (5,732.00 km) |
| Herndon to Calheta | 3,339.23 mi (5,373.97 km) |
| Herndon to Camara de Lobos | 3,349.99 mi (5,391.29 km) |
| Herndon to Canico | 3,358.30 mi (5,404.67 km) |
| Herndon to Cantanhede | 3,563.37 mi (5,734.69 km) |
| Herndon to Carregal do Sal | 3,589.99 mi (5,777.52 km) |
| Herndon to Cartaxo | 3,585.99 mi (5,771.09 km) |
