| Pittsburgh to Hoyo de Manzanares | 3,859.49 mi (6,211.25 km) |
| Pittsburgh to Huelva | 3,819.88 mi (6,147.50 km) |
| Pittsburgh to Huercal de Almeria | 4,050.65 mi (6,518.90 km) |
| Pittsburgh to Huercal-Overa | 4,057.65 mi (6,530.16 km) |
| Pittsburgh to Huesca | 3,972.26 mi (6,392.73 km) |
| Pittsburgh to Huetor Vega | 3,987.09 mi (6,416.59 km) |
| Pittsburgh to Huetor-Tajar | 3,962.46 mi (6,376.97 km) |
| Pittsburgh to Humanes de Madrid | 3,873.96 mi (6,234.54 km) |
| Pittsburgh to Ibi | 4,079.99 mi (6,566.12 km) |
| Pittsburgh to Ibiza | 4,164.44 mi (6,702.02 km) |
| Pittsburgh to Icod de los Vinos | 3,625.12 mi (5,834.06 km) |
| Pittsburgh to Igualada | 4,082.72 mi (6,570.51 km) |
| Pittsburgh to Illescas | 3,878.02 mi (6,241.07 km) |
| Pittsburgh to Inca | 4,205.17 mi (6,767.56 km) |
| Pittsburgh to Ingenio | 3,706.52 mi (5,965.06 km) |
