U.S. hurdler Dawn Harper Nelson coming out of retirement to compete at Tokyo 2020

Dawn Harper Nelson has announced that she is coming out of retirement after a year. Photo by Mustafa Yalcin/Anadolu Agency/Getty Images

United States hurdler Dawn Harper Nelson has announced that she is coming out of retirement to chase more Olympic gold.

Harper Nelson, who gave birth to a daughter in April, said on Monday she was training for the 2020 Tokyo Games and hoped to win a third Olympic 100m hurdles medal.

"I know I still have the talent and can do it," the 35-year-old told Reuters.

She won gold at Beijing in 2008 and claimed a silver medal in London 2012, but retired from the sport last year to start a family.

"The whole time, I didn't know in my heart if I was done," Harper Nelson said.

During her pregnancy she continued to work out, telling friends she just wanted to feel good, but talk of making a return became serious after her daughter's birth and she went back to the track in May.

"I didn't want Harper to feel like her birth symbolized mom's dream dying," she added

"So I talked with my family and I talked with my husband, and my husband was like, 'We are doing it if you want to do it.'"

Discussions are under way for longtime mentor Bob Kersee to direct her training again with her husband, Alonzo Nelson, assisting in East St. Louis.

The challenge will not be an easy one, even though her physio team has told the 2017 world silver medalist that physically she looks the best she has in years.

Americans swept all three medals at the 2016 Rio Olympics and took the top two spots at the recent Doha World Championships.

"I know I still have the speed and with my technique, I think I can still put together an amazing race and still run some personal bests," said the American, whose personal best of 12.37 seconds makes her the joint 13th fastest hurdler of all-time.

"That [indoor meets] will be important because when I started training, I didn't have that pop, that burst of speed.

"I've tasted gold, silver and bronze and gold tastes the best," she said of her medal haul.