| Harker Heights to Oliveira de Frades | 4,833.95 mi (7,779.50 km) |
| Harker Heights to Oliveira do Bairro | 4,824.46 mi (7,764.23 km) |
| Harker Heights to Oliveira do Hospital | 4,859.50 mi (7,820.61 km) |
| Harker Heights to Ourem | 4,845.86 mi (7,798.66 km) |
| Harker Heights to Ovar | 4,808.23 mi (7,738.10 km) |
| Harker Heights to Pacos de Ferreira | 4,808.12 mi (7,737.93 km) |
| Harker Heights to Palmela | 4,860.62 mi (7,822.41 km) |
| Harker Heights to Paredes | 4,813.16 mi (7,746.04 km) |
| Harker Heights to Paredes de Coura | 4,782.45 mi (7,696.61 km) |
| Harker Heights to Penacova | 4,841.84 mi (7,792.19 km) |
| Harker Heights to Penafiel | 4,815.34 mi (7,749.53 km) |
| Harker Heights to Peniche | 4,815.48 mi (7,749.76 km) |
| Harker Heights to Peso da Regua | 4,840.57 mi (7,790.14 km) |
| Harker Heights to Pinhal Novo | 4,858.09 mi (7,818.33 km) |
| Harker Heights to Pinhel | 4,885.21 mi (7,861.99 km) |
