Sir Kevin Sinfield received a reality check while raising money in honour of the late Rob Burrow

Sir Kevin Sinfield was left extremely emotional after completing yet another harsh charity run and feeling "grumpy." However, a surprise from Rob Burrow's children, along with their mother and Prince William, brought him right back to reality.

As he recalled the moment, the ex-rugby league star highlighted the courage and strength of his late friend's family as they continue life without Rob. Sinfield commended Burrow's children - Macy, 14, Maya, 10, and Jackson, seven - stating that they should never have had to handle the heartbreak of watching their dad succumb to motor neurone disease (MND) at just 41 years old.

During an appearance on The Good, The Bad and The Rugby podcast, the ex-Leeds Rhinos star described a particularly gruelling charity run that took a lot of his strength.

He had been anticipating nothing more than a hot bath following the finale of his 7-in-7 ultra-marathon challenge. However, he was informed he would need to wait five minutes before crossing the finish line.

Make sure you don't miss sport's biggest stories and breaking news by making the Daily Mirror one of your Google preferred sources.

Sinfield, who has generated £13m through remarkable fundraising endeavours in tribute to Burrow, acknowledged he had grown weary and irritable as he got close to the end at Wakefield Trinity's ground and wasn't pleased about the postponement.

But the explanation for the hold-up quickly emerged when he stepped onto the pitch and discovered the main stand filled with people waiting to greet him, led by the Burrow family. He explained: "All I want to do is get in a hot bath, right. It's rained and it's not been a great day. I'm tired, a bit grumpy.

"You can almost see the finish line and I'm sort of thinking about the bath. And then get a phone call saying, 'You've gotta wait five minutes.' I'm like, 'Wait five minutes, why? What's going on? What's happened? Why are we waiting five minutes, we're gonna be late.'"

Sinfield revealed his initial bewilderment upon reaching the stadium to find the usual welcoming party absent. He added: "Well we turned up at the ground and, typically, there's normally a few people outside to greet us. There's nobody there - 'What is going on?'

"Then the guy who plans all our routes, Tristan - he's a top guy - comes running out from pitchside and says - because we've all stopped looking round because I know where the changing rooms are and I go to have my bath - And he says, 'You're in here!'

"And then I look up and I see - first of all, I saw Sally Nugent (BBC reporter), and then I saw Prince William and Princess Catherine. And then Rob's kids. And Rob's mum, sister. It couldn't have been a better combination of people."

Growing more emotional, Sinfield said: "Just a really, really nice moment for a whole host of reasons. But up until turning that corner, walking on the grass, yeah, I was a little bit grumpy.

"Saying, 'Who's made us late here?' Well yeah, we had a decent excuse and it couldn't have been a better combination of people. Clearly the royalty are massively important, but for Rob's kids to be there, it was pretty special. It shouldn't have been that way for them."