Dutch speedskater Femke Kok has added a gold medal and the Olympic record in the 500 meters to her world mark in that event. Kok beat defending champion Erin Jackson head-to-head in the final heat Sunday and relegated 1,000 winner to Jutta Leerdam to the silver. Kok powered through the final turn and easily pulled away from Jackson, finishing in 36.49 seconds — a whopping 0.66 ahead of teammate Leerdam, who defeated her in the 1,000 on Monday. Miho Takagi of Japan was third in 37.27 for her ninth career Olympic medal. Jackson was fifth.