The 24-hour operation was the first that Kurds carried out as part of the offensive on Mosul announced Monday before dawn by Iraqi Prime Minister Haider al-Abadi, with the backing of the U.S-led anti-Islamic State coalition, reports Reuters.
In a statement late on Monday, the Peshmerga said the operation allowed them to secure "a significant stretch" of the 80-kilometre (50-mile) road between Erbil, their capital, and Mosul, about an hour drive to the west.
Coalition warplanes attacked 17 Islamic State positions in support of the Peshmerga operation in the heavily mined area, the Kurdish statement said, adding that at least four car bombs were destroyed.
Mosul, with a current population of 1.5 million, is the largest city still under control of the militants, followed by Raqqa, in neighboring Syria. Islamic State declared a "caliphate" over parts of the two countries in 2014.