Detail from Italian Baltoro-map:
At Concordia the Godwin-Austen glacier from the north, the Broad Peak and East Gasherbrum glaciers from the east merge with the Baltoro glacier, coming from the south.
Baltoro glacier is about 70 km long and genarally between 2 and 3 km wide.
And still not the longest glacier in the Karakoram-range!