| Harker Heights to Cascais | 4,831.42 mi (7,775.42 km) |
| Harker Heights to Castelo Branco | 4,892.57 mi (7,873.84 km) |
| Harker Heights to Castro Daire | 4,840.66 mi (7,790.29 km) |
| Harker Heights to Celorico de Basto | 4,823.80 mi (7,763.15 km) |
| Harker Heights to Chamusca | 4,858.49 mi (7,818.99 km) |
| Harker Heights to Chaves | 4,838.60 mi (7,786.98 km) |
| Harker Heights to Cinfaes | 4,825.48 mi (7,765.86 km) |
| Harker Heights to Coimbra | 4,836.52 mi (7,783.63 km) |
| Harker Heights to Condeixa-a-Nova | 4,835.80 mi (7,782.46 km) |
| Harker Heights to Corroios | 4,846.92 mi (7,800.36 km) |
| Harker Heights to Coruche | 4,867.67 mi (7,833.76 km) |
| Harker Heights to Costa de Caparica | 4,841.90 mi (7,792.28 km) |
| Harker Heights to Covilha | 4,879.04 mi (7,852.05 km) |
| Harker Heights to Eiras | 4,835.89 mi (7,782.62 km) |
| Harker Heights to Elvas | 4,937.39 mi (7,945.96 km) |
