The prospect of disturbances at the 26.2-mile race was raised after last Saturday's Grand National was delayed by animal rights protesters trying to storm Aintree - and then orange paint being doused on the table at the world snooker championships in Sheffield on Monday.

Just Stop Oil activists have been ambiguous about their plans around the London Marathon but Extinction Rebellion has assured race organisers it will not cause disruption.

"That's a good thing for sure," Sir Mo told Sky News. "Sunday's race is not about the elites. It's about the mass race and people who are running out there for their loved ones who have been training for many years and got the chance to be able to compete in a London Marathon."

He added: "I hope people can remember them more for what they're doing."

The four-time Olympic champion has already retired from the track and is now ready to stop competing completely this year.

There will not be another marathon after what he expects to be a "very emotional" one on Sunday.

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"I am not young. I am not a spring chicken anymore," the 40-year-old said. "It has to end at some point."

His best finish in London was third in 2018 while his only marathon major success was in Chicago later that year.

He said: "It's been hard for the last two years because I love the sport. I go out there and put in 100-plus miles and keep going.

"And over the years, I took that for granted and have got on a bit. My body can't do that anymore and that's one of the toughest things.

"But I've had an amazing career, if you look back. What I have achieved. I'm proud to win so many medals.

"And that memorable moment - Super Saturday to do that - that motivates me every day to continue.

"But my body can't do it anymore and this will be my last marathon."

Sir Mo has a couple of shorter races lined up next but probably not a Team GB farewell appearance at the World Athletics Championships in August.

Then he will work out how to inspire those trying to emulate the six-time world champion's success.

He said: "I would love to be able to give back to the youngsters and get into coaching and continue to develop other athletes who are capable of what I've achieved over the years."