The standard waymark of Lycian Way is a half white, half red rectangle. There is no uniform distance between each marks along the route, when the trail start to twist and turn, they become more frequent and when the trail lies as a straight line, converting into an easily-visible path, then they become rarer. They are mostly painted on rocks along the route, though you can also spot some on utility poles, garden walls, or on the actual path itself.
Side paths straying from the main trail -and usually arriving in very off-the-beaten-path sites (in a literal sense!)- have marks similar to the standard rectangles, just yellow replaces white.
Other waymarks include a "turning" or an "S" rectangle (again half white, half red) with an arrow on, which mean there is a curve (or S-curves) coming ahead. They sometimes can be found immediately before the curve. A "red cross" is marked on "wrong" trails and roads, usually accompanied by the standard rectangle painted on the "correct" way.
Once every five or so years, a number of volunteers replenish the waymarks. However, in the meantime some local villagers, at their all good will, repaint the marks on some sections and this may cause the new marks shifting a few (hundred) metres on either side of the actual trail. However, this is not a very big problem as the "new" marks will join the "old" marks somewhere in some way, so you will not get lost even by following these "accidentally" painted marks.
Signs, easily-recognizable, distinctive yellow arrows with the header Fethiye'den Antalya'ya Likya Yolu, i.e. Lycian Way Fethiye to Antalya, are nowhere as frequent as the waymarks, but still can be seen, and indeed are useful, on most junctions (where for example trail separates from a main road) and at village exits. They name the next destination on it with the distance in kilometres. Note the distances on signs are approximate, so don't worry if you see the distance going up or down by 1 km on the next sign.