| Johnston to Benavente | 4,283.01 mi (6,892.84 km) |
| Johnston to Bombarral | 4,255.76 mi (6,848.99 km) |
| Johnston to Bougado | 4,206.75 mi (6,770.12 km) |
| Johnston to Braga | 4,205.17 mi (6,767.57 km) |
| Johnston to Braganca | 4,268.61 mi (6,869.66 km) |
| Johnston to Cabeceiras de Basto | 4,223.54 mi (6,797.13 km) |
| Johnston to Cacem | 4,267.26 mi (6,867.49 km) |
| Johnston to Cadaval | 4,259.55 mi (6,855.08 km) |
| Johnston to Caldas da Rainha | 4,251.51 mi (6,842.14 km) |
| Johnston to Calheta | 4,119.90 mi (6,630.34 km) |
| Johnston to Camara de Lobos | 4,130.22 mi (6,646.95 km) |
| Johnston to Canico | 4,138.49 mi (6,660.25 km) |
| Johnston to Cantanhede | 4,241.30 mi (6,825.71 km) |
| Johnston to Carregal do Sal | 4,264.56 mi (6,863.15 km) |
| Johnston to Cartaxo | 4,276.95 mi (6,883.08 km) |
