| Keystone to Entroncamento | 4,210.04 mi (6,775.41 km) |
| Keystone to Ericeira | 4,168.98 mi (6,709.33 km) |
| Keystone to Ermezinde | 4,177.69 mi (6,723.34 km) |
| Keystone to Esmoriz | 4,177.85 mi (6,723.61 km) |
| Keystone to Espinho | 4,176.34 mi (6,721.16 km) |
| Keystone to Esposende | 4,161.05 mi (6,696.57 km) |
| Keystone to Estarreja | 4,184.14 mi (6,733.72 km) |
| Keystone to Estoril | 4,174.26 mi (6,717.82 km) |
| Keystone to Estremoz | 4,266.50 mi (6,866.27 km) |
| Keystone to Evora | 4,254.97 mi (6,847.71 km) |
| Keystone to Fafe | 4,193.45 mi (6,748.70 km) |
| Keystone to Falagueira | 4,182.36 mi (6,730.86 km) |
| Keystone to Famalicao | 4,176.29 mi (6,721.09 km) |
| Keystone to Fanzeres | 4,179.31 mi (6,725.96 km) |
| Keystone to Faro | 4,281.07 mi (6,889.71 km) |
