I've posted this before on C+ but not really got much of a response. I used to think my commute into London was longer than it actually is, so haven't cycled. I did a Google map today and a work to home car ride is 32 miles which is eminently achievable by bike in the evening once or twice a month, even by me. Thing is, a good proportion of that trip will be on the A13 which I rarely use, but I do know it's 70mph in places and more like a motorway. Does anyone know if the A13 is a viable route from London, City to Essex on a bike or do I need to switch to another (potentially longer) route (say A12, A127)? Any comments would be appreciated.