| Boulder to Santarem | 4,849.51 mi (7,804.53 km) |
| Boulder to Santiago do Cacem | 4,898.59 mi (7,883.52 km) |
| Boulder to Santo Andre | 4,895.03 mi (7,877.79 km) |
| Boulder to Santo Tirso | 4,774.08 mi (7,683.14 km) |
| Boulder to Sao Bras de Alportel | 4,970.22 mi (7,998.80 km) |
| Boulder to Sao Felix da Marinha | 4,779.48 mi (7,691.83 km) |
| Boulder to Sao Joao da Madeira | 4,790.67 mi (7,709.84 km) |
| Boulder to Sao Joao de Ver | 4,785.75 mi (7,701.92 km) |
| Boulder to Sao Mamede de Infesta | 4,773.79 mi (7,682.68 km) |
| Boulder to Sao Pedro do Sul | 4,814.53 mi (7,748.23 km) |
| Boulder to Satao | 4,829.33 mi (7,772.06 km) |
| Boulder to Seia | 4,843.32 mi (7,794.56 km) |
| Boulder to Senhora da Hora | 4,772.20 mi (7,680.11 km) |
| Boulder to Serpa | 4,949.67 mi (7,965.73 km) |
| Boulder to Serta | 4,851.71 mi (7,808.07 km) |
