Tintu Luka was born on 26th April 1989. She is trained under P. T Usha, who is an Indian track and field athlete and is regarded as one of the greatest athletes India has ever produced and is often called the "queen of Indian track and field".
Tintu Luka is the national record holder in the 800-metre race in women’s section. She was the student at the Usha School of Athletics, Koyilandy, Kerala, and is supported by Olympic Gold Quest.
In the Continental Cup held in 2010 at Croatia, she timed 1:59.17, to break Shiny Wilson's 15-year-old national record of 1:59.85 in the 800m event. This performance of Tintu Luka gave rise to prospect from her tutor and mentor P T Usha and the nation that the 21-year-old could bring home an Olympic medal.
In 2008, Tintu Luka won a silver medal in the 800-metre race at the Asian Junior Athletics Championship in Jakarta.
At 2010 Commonwealth Games, Tintu Luka finished in sixth place in the women’s 800meter with a timing of 2:01.25s. Pilavullakandi Thekkeparambil Usha (P T Usha) responded to this performance, saying that Tintu Luka had not been exposed to such a large crowd before and that the crowd's applause and cheering could have made her lose concentration and run faster without prior planning.
Later, Tintu Luka won the bronze medal in the women's 800 metres event of the track and field competitions at the Asian Games 2010. Tintu Luka had a disappointing finish in the 2010 Commonwealth Games, which led the pack right from the start, but could not keep pace in the last 50 metres and finished third with a timing of 2:01.36 seconds.
In the second of the three semi-finals for 800 metres event at the London 2012 Olympic Games, Tintu Luka finished sixth in her heat clocking 1:59.69 seconds her season’s best, but could not qualify for the finals.
For her performance at the Olympic Games, the Government of Kerela awarded her 2 lakhs rupees and provides her with a job in a gazetted rank in the official of Government of Kerala.