New Never Worn New Balance 574 Core unquestionably, an icon. Instantly recognizable and enduringly popular, the 574 has come a long way from its origins as a multi-functional blend of trail and road running design. As a marked departure from the narrow racing silhouettes of prior generations, the 574 offered reliable comfort and stylistic versatility, in an unassumingly simple package. The New Balance 574 Core continues to defy trends and other artificial distinctions to become a fixture in closets all over the world.