Sinfield said it is a “team effort” and “fantastic” to hit the target, but added “it seems to never be enough, they [charities] need more money to research, and find a cure.”
As well as Borthwick, Gary McKee from Cleator Moor, known locally as the “marathon man”, also completed the challenge alongside Sinfield.
He said it was “an honour” to be asked to join the former Leeds Rhinos player through Cumbria.
Mr McKee said: “The day has been incredible, there’s been lots of smiles, cheers, horns popping, it’s been really good.”