1. Konstanze "Koko" Klosterhalfen was born on 18 February 1997 and is a German middle- and long-distance runner.

1. Konstanze "Koko" Klosterhalfen was born on 18 February 1997 and is a German middle- and long-distance runner.
Konstanze Klosterhalfen is the 2019 World Championship bronze medallist and 2022 European champion in the 5000 metres, becoming the first German medalist of the event at the World Athletics Championships and the first German winner of the event at the European Athletics Championships.
At the European Indoor Championships, Klosterhalfen won silver medals for the 1500 metres in 2017 and the 3000 metres in 2019 and 2023.
Konstanze Klosterhalfen took four individual medals at the European Cross Country Championships.
In October 2022, on her debut at the distance, Konstanze Klosterhalfen won the Valencia Half Marathon, setting the fastest female non-African mark in history and becoming the first non-African winner of the event since 2003.
Konstanze Klosterhalfen grew up in Konigswinter-Bockeroth, her father is a lawyer and her mother a teacher.
Konstanze Klosterhalfen attended Stadtisches Gymnasium am Oelberg in Konigswinter-Oberpleis, she had A-levels in German and Social Science.
Konstanze Klosterhalfen is enrolled at Deutsche Sporthochschule Koln in a Sport Journalism degree.
Konstanze Klosterhalfen has never been trained by Alberto Salazar, instead she was under the supervision of Pete Julian.
Konstanze Klosterhalfen describes her living in Oregon as it's like training camp every day.
Later that month, Konstanze Klosterhalfen won the 3000 metres German national indoor title in Leipzig.
Konstanze Klosterhalfen finished with 8:56.36, setting her consecutive European U20 record.
Konstanze Klosterhalfen's winning time of 32:24 minutes broke the former record held by Anke Schaning, who ran 33:03 minutes in 1990.
Later that month, Konstanze Klosterhalfen competed again in the Diamond Race meet at the Muller Grand Prix Birmingham in the UK.
Konstanze Klosterhalfen's time was the first German women's record in a non-hurdle track event since 2000.
Konstanze Klosterhalfen lowered her personal best by nearly 16 seconds.
Konstanze Klosterhalfen crossed the finish line after 15:15.80, the third fastest time for a German woman.
Konstanze Klosterhalfen's time ranked her the sixth-fastest woman over the distance in history.
Konstanze Klosterhalfen defeated second-place finisher Gabriela DeBues-Stafford with an advantage of 1.36 seconds.
The discipline final winner became Hassan in 3:57.08, Konstanze Klosterhalfen beat the fourth-placed world record holder Genzebe Dibaba by 1.84 seconds.
At the NOP Konstanze Klosterhalfen was trained by Salazar's former assistant Pete Julian, who maintained on German television, "We know, we do everything right".
Konstanze Klosterhalfen confirmed that she will go on with training under the supervision of Julian.
Konstanze Klosterhalfen placed second with 4:04.38 in front of Ciara Mageean, who finished in a new Irish indoor record of 4:06.42.
Konstanze Klosterhalfen finished in 4:17.26, an almost 3 second improvement on her personal best and a new national record, the fourth-fastest time ever.
Konstanze Klosterhalfen won the competition at the Boston University Last Chance Invitational meet in 14:30.79, which placed her fourth in the world all-time ranking.
Konstanze Klosterhalfen's winning time marked a 45 seconds improvement on her previous personal best set in Boston in 2019.
Konstanze Klosterhalfen won in a time of 31:01.71, lapping all runners, breaking the former best of 31:03.62 set by Kathrin Ullrich in 1991.
Konstanze Klosterhalfen's season was injury-plagued, including pelvic and back problems.
In October, on her debut at the distance, Konstanze Klosterhalfen won the Valencia Half Marathon with the third-fastest time ever set by a European woman of 65:41, becoming the first female non-African winner of the event since 2003.
Konstanze Klosterhalfen was 23 seconds short of the German record and 26 of the European record.