Rio de Janeiro: When the Olympic Games begin on Friday, Usain Bolt will be thinking about one thing and that is running the fastest he ever has. Although he already holds world records in the 100m and 200m races, the Jamaican hopes to run even quicker in Rio.

"I hope to run the best race of my life in Rio de Janeiro... Am confident I'll run the race of my life," Bolt said in an interview to a Spanish website.

"A world record is the only thing you can have which nobody disputes. In football there is debate about who is the best in the world, but nobody can debate who is the fastest. Personally, I think that my records will be in place for a long time."

The 29-year-old also spoke about what keeps him motivated to keep improving on his already-impressive feats. "I don't just want to be the best, I want to be the greatest," Bolt explained.

"To be the greatest you have to keep winning and that's what keeps me wanting to make further progress. I think it's always fun to try to win and I think this sport needs me to win.

"Reflecting on the differences between the 2016 Games and his first Olympic win in Beijing in 2008, Bolt admits that the mindset has changed. "Now, the feeling is different as you feel you have to prove to yourself that you are still the best," he said.

The sprinter was also asked about his recent injury and how that has affected his preparations. "I feel good," he said.

"I've been training more gently the past two weeks, but I'm happy to return. I had to visit the doctor (Hans Wilhelm Muller), had to travel and train, but now I'm running without any problem."

Asked if he had ever contemplated the possibility of defeat, Bolt oozed confidence while also acknowledging there are some impressive competitors. "I won't lose any gold. Take it from me," he retorted.

"If my coach says I will win, then I trust him. However, I think every runner who goes to the Games is strong.

"For example, this season Yohan Blake is back and you can look at (Trayvon) Bromell as well, while (Justin) Gatlin is also here and will be an interesting match up."

Could this be Bolt's last Olympic Games? "Whether this is my last Games or not will be decided by my boss," he joked. "I have a contract."

Asked where he sees himself in 20 years, Bolt admitted he isn't sure yet. "I think I will be attached to the world of athletics all my life," he said.

"I hope to start a family and continue working in athletics by helping my team achieve its goals. I will continue with my clinics to help others."