The former rugby union’s Extra Mile Challenge – a 101 mile race from Leicester, where he works as a rugby union coach, to Headingley, where he spent his days playing – has been set up to raise funds for Leeds Hospital Charity and the Motor Neuron Disease Association.
Sinfield had set out to raise £ 100,000 for charity in honor of his friend and former teammate Rob Burrow, who is currently battling the disease and was on the pitch at Headingley as Sinfield finished.
By the end of the race he had raised almost £ 600,000, with that number growing rapidly.
Sinfield had struggled through the night, describing himself as feeling drunk before the last night and, in a tearful finale, struggled to run the final leg with Burrow’s wife Lindsey and daughter Macy.
After crossing the finish line, Sinfield said: “It’s great. To see Rob and Lindsey and Macy running with us again. It’s real teamwork. So much has happened behind the scenes. The support along the way has been amazing from the start.
“We wanted a battle and we had one, but we got here. Were broken. I don’t know when I can run again. It’s just completely awesome.