Kaz/Fiona. FYI if you do decide to do Berlin....
Berlin Sold out in its original registration period in 3 hours. However some tour operators have places left..
However it is expected that placed will come free again. Link and text below
http://www.bmw-berlin-marathon.com/en/news-and-media/news/2012/10/25/sold-out-40000-runners-registered-for-the-2013-bmw-berlin-marathon-within-three-and-a-half-hours.html
SOLD OUT: 40,000 runners registered for the 2013 BMW BERLIN MARATHON within three and a half hours
2012-10-25
Registration for the 2013 BMW BERLIN MARATHON is closed. The participation limit of 40,000 was reached after three and a half hours.
Several tour operators still have some bib numbers left.
All pre-registered receive an email with a personal code and have to perform their final registration between November 5th and 9th (Paps test, any desired extras).
On November 16th information will be provided (via website, Facebook/Twitter and newsletter) on how many spots in each of the three categories will be open again for registration.
On November 17th at 6 p.m. those remaining spots are open again for registration.