Thanks TPF for the link to the Madrid Half. I didn't spot your posting then saw it today - and guess what, it was five hours before the discounted pre-booking offer closed. So I booked just in time, and am hugely looking forward to it. Thanks again and a happy new year.
Thanks for encouraging and practical responses everyone. My partner just treated me to a Madrid trip in April. It'll be two weeks before the London Marathon so I will be needing to do a longish run some time while we're out there. At some point I was going to post a separate thread on suggesting running routes in Madrid. But if anyone has any suggestions at this point I'd be very happy to hear them