Marc O'Shea created the artwork yesterday - but will he take up challenge of also drawing the walker?...

A cyclist has used Strava to sketch out a giant dog during a 152km bike ride in South London.

Marc O’Shea’s ride, which he carried out yesterday, involved more than eight hours in the saddle.

It spanned an area from Brixton in the west to Bexley in the east, and New Cross Gate in the north to Keston in the south.

He didn’t stick to quiet roads, either, with the route including the South Circular, the A2 and the A20.

One of the commenters on Strava has suggested an even bigger challenge – sketching out the person walking the canine.

Here’s his creation.

Watt is it boy - source Marc O'Shea on Strava.PNG

Born in Scotland, Simon moved to London aged seven and now lives in the Oxfordshire Cotswolds with his miniature schnauzer, Elodie. He fell in love with cycling one Saturday morning in 1994 while living in Italy when Milan-San Remo went past his front door. A daily cycle commuter in London back before riding to work started to boom, he's been news editor at road.cc since 2009. Handily for work, he speaks French and Italian. He doesn't get to ride his Colnago as often as he'd like, and freely admits he's much more adept at cooking than fettling with bikes.