or just go a ride on the course on another weekend™
I just had a peek at the route, as I've been meaning to ride the it for a while, accepting that the London sections will be busy and unpleasant, but ...
Ye gods, that's horrible. There is no way on earth that I'm cycling down the A12 down the Lea valley (is it even legal? I drive up and down there sometimes and can't recall ever seeing a bike). OK that's just the first 10k or so, and it does get a bit better, but not much. Then the Cromwell road, how very nice and lovely.
I think I'll be working out a heavily edited route, that may still include Richmond Park and Hampton Court inside the M25 but otherwise avoid going North of the river for the crap bits. I'll get the Catford Cat to stand in for Buckingham Palace. It's got more style.