That's what MapMyFitness calls it - 22 minute run, 6x (30s REALLY FAST, 2 minute recovery), 10 minute run.
Having missed my opportunity to get out early this morning (I forgot a repair man was coming!) I thought today was going to be a wasted day. Then late his afternoon, it went overcast and started to look like it was going to rain so I headed out. I needed to fetch the grandsprocket after, so I drove to the airport and then ran up the river. Of course the sun then came out and I got really hot! Hey ho. There was a kayaker on the river, heading in the same direction as me when I started out, so I spent some of my time playing 'catch up' with them, until I realised that I was then running faster than the app wanted me too, so I wouldn't have enough energy to do the intervals by the time they came up, at which point I switched to counting my steps.
Despite the speedy start, I managed all six of my fast runs, which is rare for me as I normally flake out on the last one. Maybe this training lark is paying off π