| Mason City to Entroncamento | 4,207.45 mi (6,771.24 km) |
| Mason City to Ericeira | 4,184.42 mi (6,734.17 km) |
| Mason City to Ermezinde | 4,137.37 mi (6,658.45 km) |
| Mason City to Esmoriz | 4,143.84 mi (6,668.87 km) |
| Mason City to Espinho | 4,141.21 mi (6,664.63 km) |
| Mason City to Esposende | 4,115.37 mi (6,623.05 km) |
| Mason City to Estarreja | 4,154.21 mi (6,685.55 km) |
| Mason City to Estoril | 4,195.18 mi (6,751.49 km) |
| Mason City to Estremoz | 4,270.53 mi (6,872.76 km) |
| Mason City to Evora | 4,267.49 mi (6,867.86 km) |
| Mason City to Fafe | 4,145.32 mi (6,671.24 km) |
| Mason City to Falagueira | 4,200.79 mi (6,760.52 km) |
| Mason City to Famalicao | 4,131.34 mi (6,648.74 km) |
| Mason City to Fanzeres | 4,139.98 mi (6,662.66 km) |
| Mason City to Faro | 4,326.93 mi (6,963.51 km) |
