How long did Telemachus search for his Odysseus?

Telemachus searched for his father, Odysseus, for about a year. His journey began in earnest after Athena encouraged him to seek information about Odysseus's whereabouts. He traveled to various places, including Pylos and Sparta, to gather news and ultimately gain confidence before his father's return. This quest is a significant part of the narrative in Homer's "Odyssey."