1998–2001: High school years She is an alumna of the
Long Beach Wilson High School where she ran and until 2017 held the
national high school record for the
300 m hurdles. She ran on the 4 × 400 m relay team that set the national record in 1998, ran the second fastest time in history in 1999, and then broke its own national record in 2001 (since surpassed by cross town rival
Long Beach Polytechnic High School in 2004). as well as many of the sprint medley teams. In 1999 and again in 2001, she was named the national Girl's "High School Athlete of the Year" by
Track and Field News. She is the only person to be so honored twice, non-consecutively.
2001–2005: Collegiate years After High School, Lashinda attended the
University of South Carolina to work under
Curtis Frye. Her top times in college were as follows: 55 m H: 7.80; 60 m H: 8.32; 100 m H: 13.35; 400 m H: 54.70; 400 m: 51.38; 800 m: 2:13.77. While at South Carolina, Demus won the
World Junior Championship in 2002, the NCAA Indoor Championship at
400 meters in 2004, the first of three National Championships and a silver medal in the
2005 World Championships. Demus also was a member of the school's first NCAA team national championship when the women's track and field team won the
2002 NCAA Outdoor National Championship.
2004 Summer Olympics Demus qualified for the American team at the
2004 Athens Olympics. In the semi-final, she ran exactly the same time as her teammate
Sheena Johnson and .7 seconds faster than
Brenda Taylor who qualified in the first semi, but Demus had the misfortune to run in the much faster second semi. Her fifth place did not advance her to the final.
2008–2011: World champion at 28 years old Leaving behind the memory of failure to qualify for the
2008 Summer Olympics in
Beijing, she won the 2009 US Championships in the 400 m hurdles, with a world-leading 53.78 seconds, gaining herself a place at the
2009 World Championships in Athletics. She improved upon this with a time of 52.63 seconds at the
Herculis meeting in July. This was a meeting record and was then the fourth fastest time ever for the event. With that time she was the favorite to win the World Championships but faltered over the last two hurdles as she was passed by Olympic gold medalist
Melaine Walker of
Jamaica who was en route to the #2 time in history, leaving Demus to take home a second silver medal. However, Demus got her revenge at the
2011 World Championships in Athletics in
Daegu, South Korea, when she won the gold medal in 52.47 seconds, a new American Record and the third fastest time in history. She beat reigning Olympic Champion and defending World Champion Melaine Walker, who finished second. Heavy favorite
Kaliese Spencer who had set the fastest time in 2011, could only finish fourth behind Demus, Walker and 2010 European Champion and 2004 Olympic 400 m bronze medalist
Natalya Antyukh.
2012 Summer Olympics At the
2012 Summer Olympics held in London, Demus originally won the silver medal for the women's 400 m hurdles behind Russia's
Natalya Antyukh. In 2019, following a re-test of doping samples, Antyukh was disqualified with all her results 2013 onward deleted but her 2012 Olympic results were initially not affected. However, following further re-tests in October 2022, Antyukh's results from July 15, 2012, onward were retroactively voided. On 20 December, it was announced that she had been stripped of her 400 m hurdles gold and Demus was upgraded to gold medal in her place, becoming the first woman from the United States to win the Olympic 400 m hurdles title. In a first-ever medal reallocation ceremony held at a Summer Olympic Games, Demus received the gold medal at Paris's Champions Park in conjunction with the
2024 Summer Olympics. ==Achievements==