What was the outcome of the first battle of marne?

It was a stalemate, meaning that it was a tie

ANSWER

From both a strategic and a tactical point of view it was a French victory, because the Germans were compelled to withdraw giving up their plan to outflank the left wing of French Army and isolate the British Expeditionary Force. The stalemate came after because the French did not want to push hard ahead their counteroffensive.