I need to be able to run 2.4k in about 12.5 minutes, which means I can basically do the whole run at 12kmh.
I can't do anywhere near that. I can just about run about half of that at 8kmh with a 12kmh push for the last 100/200m.
So, I'm thinking, I add an extra hundred metres to that final push every few runs til the whole thing is at that speed, then add hundred metre increments to the run until I hit the distance.
What I'm wondering though, is would I be better off walk/running the whole distance and then gradually increasing the running intervals?
Or does it not really matter?