Mount Othrys (Greek: όρος Όθρυς – oros Othrys, also Όθρη – Othri) is a mountain in central Greece, in the northeastern part of Phthiotis and southern part of Magnesia 39°1′1″N 22°42′35″E / 39.01694°N 22.70972°E.
During the ten-year war between the Titans and the Olympians (the ones that existed then) and their allies both sides used a mountain as the base for their headquarters. While the Olympians chose Mount Olympus the Titans picked Mount Othrys. The two mountains were in actuality ten miles apart.