Jeremy on Twitter: , externalTop Wiggo memory is him leading Cav on to the Champs Elysee in 2012!

Your enduring memory of Bradley Wiggins on the road are welcome on #bbccycling, 81111 on text and the BBC Sport Facebook page.

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Defending Paris-Roubaix champion Niki Terpstra was edged into second by Kristoff in Flanders. It is a position he is getting used to - the Dutchman also finished second at Gent-Wevelgem.

Only six men have successfully retained the title since the Second World War, but the 30-year-old also finished in the top five in 2013 and 2012 here and is canny enough to stay in the mix.

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Norwegian Alexander Kristoff is undoubtedly the man in form in the field.

Riding for Katusha, he has been imperious this spring, scooping a dramatic win in the Tour of Flanders alongside victories in the spellcheck-defying Driedaagse De Panne-Koksijde, external, and Scheldeprijs races.

His previous showings on Paris Roubaix have been underwhelming, with his ninth-placed finish in 2013 his best effort so far, but that sort of recent record demands a place at the head of the market.

His son may not relish another victory however. The poor lad was spooked by a champagne cork spontaneously popping, external while his dad collected his prize in Ronde.

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New Zealand's Shane Archibold, riding for the German Bora Argon team, is the first casualty in the Forest of Arenberg.

Geraint Thomas and Sir Bradley Wiggins looked like they were sat in the back half of the peloton as they made their way through safely.

Plenty of road still to ride. Time to have a look at some of the big threats to the Team Sky pair.

So where do we stand?

Well a nine-man breakaway, including Britain's Adam Blythe and a Belgian trio but no real big names, have a six-minute lead on the peloton.

The escapees are just bouncing across the first five-star section of cobbles - the Forest of Arenberg. Behind them the peloton are jostling for a prime position at the front of the pack as they prepare to filter onto the same treacherous stretch.

Geraint Thomas was forced to put his foot down after a puncture meant a Team Sky team-mate had to offer up a spare wheel.

Ninety kilometres to go.

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Bradley Wiggins may well not be the first Team Sky rider home, never mind win the whole thing.

Welshman Geraint Thomas is coming into the race with less experience, but more convincing form.

The 28-year-old won the gruelling E3 Harelbeke in March and although he then faded to 14th in the Tour of Flanders, he has a potent mix of stamina and punch that might just do the trick today.

Four-time winner Tom Boonen, missing today through injury, says Thomas can come in under the radar.

"Thomas can take advantage of the situation because everybody will be watching Wiggins," he told L'Equipe today.

Rob Hayles
Former GB cyclist on BBC Radio 5 live sports extra

"We don't have wet weather but it is extremely dry with a few wet patches and riders are falling all over the place. This is why Paris-Roubaix is one of the biggest one-day races in the calendar. They are dropping like flies."

You know that France was the most visited country in the world in 2012? The bike races that form a sort of landscape pornography are partly to thank for that.

It is another gorgeous day in northern France. Dust rather mud for the riders to deal with.

Geraint Thomas described the race as "hell on wheels" in his BBC preview. Why?

Well, just like the Grand National yesterday, it is always difficult to predict who will make it through the dirt and debris to cross the finishline first in Roubaix's open-air velodrome.

Separating the field from the finishline are 27 cobbled sections - adding up to a total of more than 55km of juddering white-knuckle riding - which are covered in a choking dust when dry and a slick, slippery film when wet.

It is likely to get messy.

What will be your enduring memory of Sir Bradley Wiggins in the great outdoors?

Sat on his London 2012 throne?

Sipping champers as he closes in on the Champs-Elysees?

Or sat on his backside in a "before-they-were-(really)-famous" moment in this video?, external

Let us know via #bbccycling , externalon Twitter and 81111 on text and the BBC Sport Facebook page. , external

BBC Radio 5 live sports extra

Simon Brotherton and Rob Hayles have picked up their passes, taken up position in the Roubaix velodrome fired up their BBC Radio 5 live sport extra transmitter.

You can listen in to their commentary via the live coverage tab at the top of this page.

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But today, after Tour de France victories, Vuelta podium finishes and Olympic gold, Wiggins climbs aboard his road bike for the final time in Team Sky colours.

An assault on the hour record and preparations for Rio 2016 as part of his own dedicated track team await.

But before he gets to ride the pine, he is going to have his fillings juddered and marrow mashed for a final time over the cobbles of Paris-Roubaix.

Image source, Getty Images

Donging that dirty great bell to open the London Olympics.

Rivalling Paul Weller for the title of Britain's grand high Modfather.

Inspiring the nation's best-selling newspapers to print cut-out-and-keep sideburns on their front page., external

Bradley Wiggins is the figurehead of British road racing current boom and its first bona-fide crossover star since Tommy Simpson.