SINGAPORE - Since picking up running about 14 years ago, Singapore Prison Service (SPS) chief warder Amir Hamzah Abdul Razak has progressed from running 5km races to ultramarathons of 200km.

The sport has also helped the once heavy smoker kick the habit and seen the 37-year-old forge stronger bonds with his colleagues such as rehabilitation officer Mustafa Kamal Fasalul Rahman.