Date of Birth: 
About Gulustan Mahmood
- Gulustan Mahmood Ieso (born 1 August 1991), also known as Kolestan Mahmoud, is an Iraqi track and field athlete who competes in sprinting events.
- She holds a number of Iraqi records and helped win her country's first ever women's medals at the Asian Athletics Championships in 2011.
- She lost these medals as her doping sample at that competition came back positive for the banned stimulant methylhexaneamine, receiving a one-year ban for the infraction. Following in the footsteps of Dana Hussein Abdul-Razzaq and Alaa Jassim, her first major appearances came in 2009 when she won the 400 metres and 4×400 metres relay gold medals at the Arab Athletics Championships, as well finishing as runner-up in the 200 metres.
- Ieso represented her country in the two individual sprints at the 2009 Asian Athletics Championships.
- At the 2009 Asian Indoor Games she set two Iraqi records, running 7.53 seconds for the 60 metres (finishing sixth) and an indoor record of 53.75 seconds for the 400 m – a time which brought her the silver medal in the event, behind Chen Jingwen.
- She then helped the Iraqi women's 400 m relay team to a third national record of 3:59.01 minutes.Ieso won the 400 m and 800 metres titles at the 2010 Asian Junior Athletics Championships.
- She went on to reach the semi-finals of the 400 m at the 2010 World Junior Championships in Athletics.
- With a team featuring Zhilan Salah Mahmood, Dana Hussein Abdul-Razzaq and Alaa Jassim, she won the West Asian Championships with a new national relay record of 3:43.60 minutes.
- Ieso ran in both the 100 m and 400 m relay events at the 2010 Asian Games, as well as performing in the heats of the individual 400 m.
- Highlighting the low development of women's athletics in Iraq, a mark of 33.57 m in the javelin throw at a local meeting brought Ieso another national record.In the 2011 season she set a personal best in the 100 metres at the national junior championships, recording a time of 12.02 seconds.
- She was chosen to compete at the 2011 Asian Athletics Championships: she set a 200 m personal best of 24.25 seconds in the heats, but was disqualified in the finals.
- She had more success over the 400 m distance as she finished quickly to set a personal record of 52.80 seconds and take the silver medal behind Olga Tereshkova – this was the first women's medal Iraq had ever won in at the Asian Championships.
- She helped double that tally later in the competition as Iraq's 400 m relay team won the bronze medal in another Iraqi record time of 3:41.91 minutes.
- However, she lost both her individual and relay medals as her doping sample at that competition came back positive for the banned stimulant methylhexaneamine, receiving a one-year ban for the infraction.
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