It begins southwest of Code as the former headwaters of the Garoze River.

The mouth of the river in Iecava Parish is located near Zālīte.

In a large part of the Īkstrum's course, the bed is regulated.

The most notable settlements on its banks are Code, Bērzmuiža, Zālīte.

The Īkstrums has been mentioned in Edvards Virza's works.