Born in April 1911, he took up running at 89 in 2000, completing his first marathon and quickly rising to fame by setting multiple age-group records.
Known as the Turbaned Tornado, Mr Singh became the first centenarian to run a marathon and retired from the sport at 101, having also been a torchbearer for the London 2012 Olympics.
His death was confirmed by his London-based running club, Sikhs In The City, which plans to dedicate future events to his life and achievements.
Mr Singh was described by his coach Harmander Singh, as an “icon of humanity and powerhouse of positivity” while local MP Preet Kaur Gill called him a “truly inspiring man”.