Ka cika wannan jumla: Har zuwa 1973, babban abokin hamayyar Errath ita ce Sonja Morgenstern, 'yar Jamus ta Gabas da Jutta Müller ta horar. A cikin 1976, babban abokin hamayyarta ita ce Anett Pötzsch, wanda Müller ya horar da shi. Errath ya dauki tagulla a
Gasar zakarun Turai ta 1976 da kuma wasannin Olympics na 1976. Ta yi ritaya bayan ta lashe lambar azurfa a Gasar Cin Kofin Duniya ta 1976.