What is The Cobblemonster?

It’s London’s original and best Urbosportive!  Or in plainer terms, its a bike ride around a route marked out for you around some challenging terrain, right here in the capital.

We will start from Brixton Cycles Shop, SW9 6AG departing for cobbles and climbs aplenty before finishing at Brixton Jamm, SW9 6LH for food, drinks and BIG SCREEN PARIS-ROUBAIX and a raffle with BIG PRIZES.

Hope to see you all again on Sunday the 14th of April 2019 at Brixton Cycles.

Brixton Cycles Shop, 296-298 Brixton Road, London SW9 6AG from 8am
Brixton Jamm, 261 Brixton Road, London SW9 6LH


More info on the route will appear here soon.

The route will depart from Brixton Cycles Shop and descend into the melee of the west end, blatting across some early secteurs of the Smokes’ Victorian pave before tucking into the east end and its myriad lanes of snaking cobbled nadgery.

We then cross the river start a series of LBCs (Lung Bursting Climbs) which increase in frequency toward the finish at Brixton Jamm and the finish.

The route is designed for riders of all abilities on all manner of bikes and encompasses a number of London Overground enabled bail out points for those that suffer with mechanical or physiological events. For some this will be the biggest bike ride they’ve ever taken on, for others it may seem like a gentle spin. We guarantee all riders will know they have ridden their bikes.



Registration for Cobblemonster 2019 on Sunday 14th April is open.

Registration is now close

Entry is free but we recommend a donation to our official charity Evelina London Children’s Hospital. Our guideline donation is £15 and this has remained the same since our first event in 2009.

If you’re taking part it will help a lot donate upfront although you can give us cash on the day.

Donate online to Evelina London

The generosity of our punters has meant over £30,000 has been raised since 2009.


As ever our target charity is Evelina London Children’s Hospital and all profits from the event go their way.

You can donate ahead of the ride by visiting our donation page.

Donate online to Evelina London

The Evelina London Children’s Hospital’s neonatal unit cares for around 900 babies a year, and has some of the best survival rates in the UK. They provides around one in five of the UK’s kidney transplants in children and cared for over 55,000 young patients last year.