Dutch speed skater who earned 3 Olympic medals on the 1972 Sapporo Olympics. She gained a sterling silver and two bronzes. She gained a Junior Tournament at age 16. She gained 16 silver medals during the period of her profession. Her little girl Boukje Keulen also acquired an effective skating profession. Her quickness skating profession finished about 30 years before American quickness skater Apollo Anton Ohno excelled in the activity.