| Ironton to Santarem | 3,860.08 mi (6,212.19 km) |
| Ironton to Santiago do Cacem | 3,895.05 mi (6,268.48 km) |
| Ironton to Santo Andre | 3,891.60 mi (6,262.93 km) |
| Ironton to Santo Tirso | 3,811.38 mi (6,133.83 km) |
| Ironton to Sao Bras de Alportel | 3,961.41 mi (6,375.27 km) |
| Ironton to Sao Felix da Marinha | 3,812.20 mi (6,135.14 km) |
| Ironton to Sao Joao da Madeira | 3,822.40 mi (6,151.56 km) |
| Ironton to Sao Joao de Ver | 3,817.85 mi (6,144.24 km) |
| Ironton to Sao Mamede de Infesta | 3,808.71 mi (6,129.53 km) |
| Ironton to Sao Pedro do Sul | 3,846.70 mi (6,190.67 km) |
| Ironton to Satao | 3,863.11 mi (6,217.07 km) |
| Ironton to Seia | 3,873.43 mi (6,233.69 km) |
| Ironton to Senhora da Hora | 3,806.66 mi (6,126.23 km) |
| Ironton to Serpa | 3,951.25 mi (6,358.92 km) |
| Ironton to Serta | 3,872.14 mi (6,231.61 km) |
