How far from Paris were the German troops before the first battle of marne?

Before the First Battle of the Marne in September 1914, German troops were positioned approximately 30 to 40 kilometers (about 18 to 25 miles) from Paris. They had advanced through Belgium and were closing in on the French capital as part of their military strategy. The French and British forces mounted a counteroffensive, ultimately halting the German advance and leading to a significant shift in the war's dynamics.