| Swindon to Oliveira de Frades | 808.73 mi (1,301.52 km) |
| Swindon to Oliveira do Bairro | 827.44 mi (1,331.64 km) |
| Swindon to Oliveira do Hospital | 826.51 mi (1,330.14 km) |
| Swindon to Ourem | 884.94 mi (1,424.17 km) |
| Swindon to Ovar | 807.37 mi (1,299.33 km) |
| Swindon to Pacos de Ferreira | 777.20 mi (1,250.78 km) |
| Swindon to Palmela | 961.53 mi (1,547.43 km) |
| Swindon to Paredes | 780.22 mi (1,255.65 km) |
| Swindon to Paredes de Coura | 739.13 mi (1,189.52 km) |
| Swindon to Penacova | 839.51 mi (1,351.06 km) |
| Swindon to Penafiel | 778.91 mi (1,253.54 km) |
| Swindon to Peniche | 919.08 mi (1,479.12 km) |
| Swindon to Peso da Regua | 772.37 mi (1,243.01 km) |
| Swindon to Pinhal Novo | 957.56 mi (1,541.05 km) |
| Swindon to Pinhel | 785.86 mi (1,264.73 km) |
