Despite the Turkish forces of Kilij Arslan almost destroying the Crusader contingent of Bohemond, other Crusaders arrived just in time for a very close victory.

As result of the stronger invasion, Rum and the Danismends allied in their attempt to turn back the crusaders. The Crusaders continued to split their forces as they marched across Anatolia. The combined Danishmend and Rum forces planned to ambush the Crusaders near Dorylaeum on June 29. However, Kilij Arslan's horse archers could not penetrate the line of defense set up by the Crusader knights, and the advance body under Bohemond arrived to capture the Turkish camp on July 1. Kilij Arslan retreated and inflicted losses on the Crusader Army with guerilla warfare and hit-and-run tactics. He also destroyed crops and water supplies along their route in order to damage logistical supplying of the Crusader Army.

The capital İznik is lost to Crusades.