The antonyms for "walk tracks" depend on the context. If "walk tracks" refers to trails in a park, the antonyms could be "off-road," "unmarked," "unpaved," or "wilderness." If "walk tracks" refers to the act of walking on a path, the antonyms could be "stumble," "wander," "meander," or "stray." In a different context, "walk tracks" could refer to imprints left in the ground by feet, in which case the antonyms might be "smooth," "unmarked," "featureless," or "unindentated." As with any word, the precise meaning varies according to the context, and antonyms can change accordingly.