| Helena to Benavente | 4,867.27 mi (7,833.12 km) |
| Helena to Bombarral | 4,839.09 mi (7,787.76 km) |
| Helena to Bougado | 4,761.51 mi (7,662.92 km) |
| Helena to Braga | 4,756.38 mi (7,654.66 km) |
| Helena to Braganca | 4,804.96 mi (7,732.84 km) |
| Helena to Cabeceiras de Basto | 4,772.12 mi (7,679.98 km) |
| Helena to Cacem | 4,857.38 mi (7,817.20 km) |
| Helena to Cadaval | 4,842.88 mi (7,793.86 km) |
| Helena to Caldas da Rainha | 4,833.09 mi (7,778.11 km) |
| Helena to Calheta | 4,828.78 mi (7,771.17 km) |
| Helena to Camara de Lobos | 4,838.17 mi (7,786.29 km) |
| Helena to Canico | 4,846.14 mi (7,799.11 km) |
| Helena to Cantanhede | 4,808.09 mi (7,737.87 km) |
| Helena to Carregal do Sal | 4,826.11 mi (7,766.87 km) |
| Helena to Cartaxo | 4,858.99 mi (7,819.79 km) |
