So last night was my longest run to date; both in terms of distance and time (although I'm sure there are physicists out there who will point out that, relatavistically, they are the same thing).
12k in 90 minutes, and I won't lie, it was tough going in places. Having said that, somewhere around the 7k mark, it all seem to click into place, my legs finally seemed to have figured out what they were actually supposed to be doing, and it all suddenly seemed much easier and more natural. I wouldn't go as far as to say I'd found a natural rhythm, but it did feel slightly different and more relaxed.
Still can't quite believe that from struggling to do the 8 x 1 minute reps back in March, I'm now doing this and, over the course of a week, cumulatively covering more than half-marathon distance over my 3 runs (typically 2x5k and 1x whatever I run on that night).
I do worry that some form of intervention may be being required soon...