The Lapiths were a group of legendary people in Greek mythology, who lived in Thessaly in the valley of the Peneus and on the mountain Pelion. They were believed to have descended from the mythical Lapithes, brother of Centaurus, with the two heroes giving their names to the races of the Lapiths and the Centaurs respectively. The Lapiths are best known for their involvement in the Centauromachy, a mythical fight that broke out between them and the Centaurs during Pirithous and Hippodamia's wedding.

In Greek mythology, Peneus was a Thessalian river god, one of the three thousand Rivers (Potamoi), a child of Oceanus and Tethys.