The combination of anti inflammatories and new shoes seems to have done the trick. My back is now nearly 100% and I haven't had to miss a run. 9km on Thursday, 18.5km yesterday and 9km today. Yesterday's run had me going out a bit slower than normal - just a very comfortable pace. I realised I hadn't really challenged myself just before I got to Mends Street so set myself a target of getting home before 11am which was in 14 minutes time. I made it with 40 seconds to spare. Don't know how far it is - might check it out on Map My Run later.
I am going to do 25km tomorrow and see if I can beat my 54mins for the last 12.45km. As the Countdown on my blog shows, Boston is less than 3 months away so I want to start upping the speedwork. I am thinking about running in one of the Marathon Club 10km runs in February just to see where I am at. My PB for 10km is 38.58 so it would be a good sign if I can run under that.