| Sulphur to Oliveira de Frades | 4,660.24 mi (7,499.93 km) |
| Sulphur to Oliveira do Bairro | 4,649.74 mi (7,483.03 km) |
| Sulphur to Oliveira do Hospital | 4,684.93 mi (7,539.67 km) |
| Sulphur to Ourem | 4,668.18 mi (7,512.70 km) |
| Sulphur to Ovar | 4,634.55 mi (7,458.58 km) |
| Sulphur to Pacos de Ferreira | 4,636.04 mi (7,460.99 km) |
| Sulphur to Palmela | 4,679.04 mi (7,530.19 km) |
| Sulphur to Paredes | 4,640.93 mi (7,468.85 km) |
| Sulphur to Paredes de Coura | 4,612.42 mi (7,422.97 km) |
| Sulphur to Penacova | 4,666.52 mi (7,510.04 km) |
| Sulphur to Penafiel | 4,643.17 mi (7,472.46 km) |
| Sulphur to Peniche | 4,635.95 mi (7,460.84 km) |
| Sulphur to Peso da Regua | 4,668.81 mi (7,513.72 km) |
| Sulphur to Pinhal Novo | 4,676.70 mi (7,526.42 km) |
| Sulphur to Pinhel | 4,712.93 mi (7,584.73 km) |
