Hong Kong (CNN) -- Not your average great-great grandfather, Fauja Singh has completed nine 26-mile (42-kilometer) marathons since taking up long-distance running just over a decade ago. 

On Sunday, the 101-year-old Sikh finished his final competitive race in Hong Kong, putting an end to a sporting career that has raised thousands of dollars for charity and been an inspiration to many around the world. 

Nicknamed "Turbaned Tornado" by fans for his distinctive traditional headwear, Singh said he began long-distance running in an attempt to lift the depression that engulfed him after he witnessed the death of his son. 

"I suffered a tragic incident in my life, a traumatic experience; I took up running as a new focus in life. And then marathon running developed from there," he told CNN at a training session before Sunday's race. 

He completed the 10-kilometer route that wound its way along Hong Kong's harborfront in one hour 32 minutes and 28 seconds -- four minutes faster than his time last year despite a small stumble. 

"Five or six kilometers into the race, I really decided to go for it," he said. "I had lots of power today because I was very happy. " 

Singh moved to the UK from India following the death of his son and entered his first marathon in London in 2000 aged 89. 

In 2011, Singh became the first centenarian on record to complete a marathon after finishing the Toronto Waterfront Marathon in 2011 in eight hours and 11 minutes and six seconds.  QUESTIONS:

Q1:
1. What is the age of Fauja Singh?
2. State Fauja Singh's age.
3. 
Q2:
1. How many marathons has Fauja Singh completed?
2. What is the number of marathon races that Fauja Singh has finished?
3. 
Q3:
1. What do people sometimes call Fauja Singh?
2. What is Fauja Singh's nickname?
3. 
Q4:
1. What pushed Fauja Singh to begin running?
2. Why did Fauja Singh start running?
3. 
Q5:
1. How far did Fauja Singh run today?
2. What was the length of today's run for Fauja Singh?
3. 
Q6:
1. How long did it take Fauja Singh to run 10 km?
2. In how much time was Fauja Singh done with his 10 kn run?
3. 
Q7:
1. Did Fauja Singh run faster or slower last year?
2. Was Fauja Singh's 10 km time faster or slower than the previous years?
3. 
Q8:
1. How much faster did Fauja Singh run this year than last year?
2. How much quicker did Fauja Singh complete his race this year as compared to last?
3. 
Q9:
1. How old was Fauja Singh when he first ran in a marathon?
2. At what age did Fauja Singh complete his first marathon?
3. 
Q10:
1. In what year did Fauja Singh become the first centenarian to complete a marathon?
2. What was the year when Fauja Singh became the first person over 100 to finish a marathon?
3. 
