I completed this run yesterday. There has been a lot of criticism of this race elsewhere in this forum. The busy road you mention along with narrow pavements presented a lot of problems. Too many runners in confined sections.Also race route was short by .4 of mile, so it was not a half marathon as advertised. The organisers admitted to the error. There were a lot of unhappy runners, disappointed that there times would not count as a half marathon time.
Disappointed in organisation.The start lacked atmosphere. There was no decent PA system and no music or count down to fire you up. Although the route followed the Thames, in many points, the race followed narrow pavements and runners were forced onto busy roads in order to overtake other runners. There were over 2000 runners. This was too many. The fact that this half marathon was short by .4 ml made the race a disaster for anyone aiming for a PB. Organisers have admitted the error but as yet have shown no intention to refund runners entry fees. Yet they did not provide what they advertised. It will be interesting to see how they respond. Good points- nice medal and goody bag. Potential to be a fast race but route needs rethinking and marshals need to be briefed well.
I am thinking of doing a half marathon (Bristol) two weeks before Berlin. I intend running at my marathon pace and using it as a training run. I'd be interested to hear from anybody that has done this. Did it help or hinder your marathon? My longest training run at present is 20 miles.
I got confirmation after about four hours. They did say that there would be delays in responding because of demand, but I don't know about several days, that does seem quite a long time.If you don't hear soon I would contact VLM organisers quoting your reference number.