[1] Born Annegret Irrgang, she won her first international title at the 1971 European Championships, as a part of her country's 4×100 m relay team.

With the relay team, Richter ran a new world record, beating rivals East Germany for the gold medal.

At the 1974 European Championships in Rome she was again a member of the national 4×100 m relay team, this time winning the silver medal.

[1] Before the 1976 Summer Olympics, everybody's attention was not directed at Richter, but at fellow Dortmunder Inge Helten, who had set a new world record of 11.04 just prior to the Games.

[1] Richter ran the 3rd leg of the winning relay squad at the first World Cup of Track and Field in 1977, she had the second fastest time of the year for the 100 meters of 11.03.