The Giant Mountains Foothills () are foothills of the Giant Mountains range and a geomorphological mesoregion of the Czech Republic. It is located in the Western Sudetes in the Hradec Králové and Liberec regions. It and covers about 1,247 km<sup>2</sup>. Its highest point is Hejlov (839 m) near Jablonec nad Jizerou.
The Giant Mountains Foothills lie in the midst of the following mountain ranges: to the northeast are the Broumov Highlands, to the east the Podorlicko Uplands, to the west the Jeà ¡tÃÂdâÂÂKozákov Ridge, to the northwest the Jizera Mountains, and to the north the Giant Mountains.
The Giant Mountains Foothills are a varied belt of hills, ridges and basins drained mainly by the Elbe, ÃÂpa and Jizera river systems. They are subdivided into three geomorphological microregions: the à ½elezný Brod Highlands in the west, the Podkrkonoà ¡ská Uplands in the centre, and the ZviÃÂinaâÂÂKocléà Âov Ridge in the east.
The region adjoins the Giant Mountains to the north and is connected with other Western Sudetic and Bohemian upland units to the west, south and east. Its relief is lower and more open than that of the main Giant Mountains range, consisting chiefly of rolling uplands, short ridges and incised valleys. The largest town in the region is Trutnov.
Geologically, the region is closely associated with the Krkonoà ¡e Piedmont Basin and the so-called Podkrkonoà ¡Ã Permocarbon. Carboniferous and Permian sedimentary rocks, together with volcanic material, are widely exposed and have long attracted geological research because of their fossil-bearing strata and characteristic red-bed sequences.
The landscape of the Giant Mountains Foothills is a mosaic of forests, meadows, fields and settlements. Along its northern and western margins, parts of the region meet or overlap the outer zone of protection associated with Krkonoà ¡e National Park, forming a transitional belt between the high mountain environment of the Krkonoà ¡e and the lower agricultural country to the south.