GENEVA — Secretary of State John Kerry plans to cut short his trip to Europe after breaking a leg while bicycling on Sunday and will return to Boston for medical treatment.

The State Department said that Mr. Kerry’s bike struck a curb while he was cycling near Scionzier, France. He never lost consciousness and was taken to a hospital in Geneva, where he was staying overnight.

Mr. Kerry, 71, had been scheduled to fly to Madrid on Sunday afternoon for an official visit there. He was then set to travel to Paris for a meeting on Tuesday of foreign ministers from the coalition the United States has assembled to confront the Islamic State, also known as ISIS or ISIL.

Those travel plans have been canceled, but Mr. Kerry expects to participate in the Paris event by videoconference.