| Sleaford to Oliveira de Frades | 923.15 mi (1,485.66 km) |
| Sleaford to Oliveira do Bairro | 941.97 mi (1,515.96 km) |
| Sleaford to Oliveira do Hospital | 940.62 mi (1,513.79 km) |
| Sleaford to Ourem | 999.29 mi (1,608.21 km) |
| Sleaford to Ovar | 922.02 mi (1,483.85 km) |
| Sleaford to Pacos de Ferreira | 891.85 mi (1,435.29 km) |
| Sleaford to Palmela | 1,075.79 mi (1,731.32 km) |
| Sleaford to Paredes | 894.83 mi (1,440.10 km) |
| Sleaford to Paredes de Coura | 853.92 mi (1,374.25 km) |
| Sleaford to Penacova | 953.87 mi (1,535.10 km) |
| Sleaford to Penafiel | 893.50 mi (1,437.95 km) |
| Sleaford to Peniche | 1,033.72 mi (1,663.62 km) |
| Sleaford to Peso da Regua | 886.68 mi (1,426.98 km) |
| Sleaford to Pinhal Novo | 1,071.85 mi (1,724.98 km) |
| Sleaford to Pinhel | 899.45 mi (1,447.53 km) |
