| Sulphur Springs to Oliveira de Frades | 4,653.42 mi (7,488.96 km) |
| Sulphur Springs to Oliveira do Bairro | 4,644.19 mi (7,474.10 km) |
| Sulphur Springs to Oliveira do Hospital | 4,679.17 mi (7,530.40 km) |
| Sulphur Springs to Ourem | 4,666.35 mi (7,509.76 km) |
| Sulphur Springs to Ovar | 4,627.71 mi (7,447.57 km) |
| Sulphur Springs to Pacos de Ferreira | 4,627.21 mi (7,446.77 km) |
| Sulphur Springs to Palmela | 4,682.20 mi (7,535.27 km) |
| Sulphur Springs to Paredes | 4,632.28 mi (7,454.94 km) |
| Sulphur Springs to Paredes de Coura | 4,601.07 mi (7,404.71 km) |
| Sulphur Springs to Penacova | 4,661.71 mi (7,502.30 km) |
| Sulphur Springs to Penafiel | 4,634.44 mi (7,458.40 km) |
| Sulphur Springs to Peniche | 4,636.49 mi (7,461.71 km) |
| Sulphur Springs to Peso da Regua | 4,659.56 mi (7,498.84 km) |
| Sulphur Springs to Pinhal Novo | 4,679.61 mi (7,531.11 km) |
| Sulphur Springs to Pinhel | 4,704.31 mi (7,570.86 km) |
