Cycling in East London - safe routes?

[houseofkemp]

I am off to east London at the end of April (long weekend) and need to take my bike with for some duathlon training. I use Endomondo to track and post all my training. I see that there is some routes on East London which I can use. One of them is the Ironman 70.3 route. Is this route safe to cycle on on your own?

 

Please help with some tips or ideas.

 

regards