| Sintra to Huelva | 170.49 mi (274.37 km) |
| Sintra to Huercal de Almeria | 401.79 mi (646.61 km) |
| Sintra to Huercal-Overa | 416.89 mi (670.93 km) |
| Sintra to Huesca | 524.48 mi (844.07 km) |
| Sintra to Huetor Vega | 336.85 mi (542.11 km) |
| Sintra to Huetor-Tajar | 311.21 mi (500.84 km) |
| Sintra to Humanes de Madrid | 312.85 mi (503.49 km) |
| Sintra to Ibi | 475.10 mi (764.59 km) |
| Sintra to Ibiza | 581.95 mi (936.56 km) |
| Sintra to Icod de los Vinos | 834.98 mi (1,343.77 km) |
| Sintra to Igualada | 611.52 mi (984.14 km) |
| Sintra to Illescas | 309.94 mi (498.80 km) |
| Sintra to Inca | 660.83 mi (1,063.50 km) |
| Sintra to Ingenio | 828.05 mi (1,332.61 km) |
| Sintra to Irun | 504.66 mi (812.17 km) |
