| Olbia to Santiago do Cacem | 989.31 mi (1,592.14 km) |
| Olbia to Santo Andre | 991.22 mi (1,595.22 km) |
| Olbia to Santo Tirso | 933.87 mi (1,502.92 km) |
| Olbia to Sao Bras de Alportel | 966.73 mi (1,555.80 km) |
| Olbia to Sao Felix da Marinha | 943.71 mi (1,518.76 km) |
| Olbia to Sao Joao da Madeira | 937.70 mi (1,509.08 km) |
| Olbia to Sao Joao de Ver | 940.52 mi (1,513.62 km) |
| Olbia to Sao Mamede de Infesta | 941.50 mi (1,515.19 km) |
| Olbia to Sao Pedro do Sul | 916.86 mi (1,475.54 km) |
| Olbia to Satao | 899.65 mi (1,447.84 km) |
| Olbia to Seia | 900.71 mi (1,449.55 km) |
| Olbia to Senhora da Hora | 944.22 mi (1,519.57 km) |
| Olbia to Serpa | 933.70 mi (1,502.64 km) |
| Olbia to Serta | 928.27 mi (1,493.90 km) |
| Olbia to Sesimbra | 1,001.71 mi (1,612.10 km) |
