| Clarksburg to Santarem | 3,575.56 mi (5,754.30 km) |
| Clarksburg to Santiago do Cacem | 3,608.75 mi (5,807.71 km) |
| Clarksburg to Santo Andre | 3,605.32 mi (5,802.20 km) |
| Clarksburg to Santo Tirso | 3,530.50 mi (5,681.79 km) |
| Clarksburg to Sao Bras de Alportel | 3,674.35 mi (5,913.30 km) |
| Clarksburg to Sao Felix da Marinha | 3,530.69 mi (5,682.10 km) |
| Clarksburg to Sao Joao da Madeira | 3,540.73 mi (5,698.25 km) |
| Clarksburg to Sao Joao de Ver | 3,536.25 mi (5,691.04 km) |
| Clarksburg to Sao Mamede de Infesta | 3,527.51 mi (5,676.98 km) |
| Clarksburg to Sao Pedro do Sul | 3,565.01 mi (5,737.33 km) |
| Clarksburg to Satao | 3,581.57 mi (5,763.99 km) |
| Clarksburg to Seia | 3,591.38 mi (5,779.77 km) |
| Clarksburg to Senhora da Hora | 3,525.41 mi (5,673.60 km) |
| Clarksburg to Serpa | 3,665.41 mi (5,898.90 km) |
| Clarksburg to Serta | 3,588.84 mi (5,775.67 km) |
