Ciarán Murphy

Didn't count as an official world record because of

various bits of help he got, like he had pacers that could alternate in and out of the race and these sorts of things.

But, you know, when it was done then, it was fairly clear that it was going to be done at some stage because these super shoes have come in.

They might not account for all we saw at the London Marathon, says Denny, but they're a huge part of it.

It's 10 years since super shoes emerged with Nike combining blah, blah, blah.

Well, do you want to hear about the technology behind them?

We've talked about them before.

Shoes?

Carbon fibre plates are the big things.

OK.

Now, they combine ultra-lightweight, hyper-responsive foams with curved carbon fibre plates, allowing for 4% improvement in running economy, translating to up to a 2% improvement in times.

So, obviously, that was a number of years ago.

Since then, they're getting better and better all the time.

The Puma Fast R3, which Lynch wore yesterday, it's the Irish guy, was found to offer 3% improvement in running economy.

But there was no denying which brand won the day in London.

Adidas.

Their Adizero Adios, they always name things pretty...

pretty cool way I'd ask him that Pro Evo 3 was worn by both men who went under two hours I think by the guy who finished third as well just outside two hours and by the women's champion at a featherweight 97 grams the shoe is 30% lighter than its previous iteration and offers a 1.6% improvement in running economy they'll prove highly popular when they go on sale this week at an eye-watering

€500 per pair.

So like the guy who came second, the Ethiopian, was making his debut yesterday and he ran below two hours as well, which I guess is also a very impressive feat.