To the guy above:
My CTL hovers around the 58-62 range. Although that number is kind of arbitratory in the sense it's only really relevant to me and how I've defined by pace , to set the training loads. If you do it by HR, it could be different etc. But as I said before, relative to me and how I collect data, I was about the same pbs for a while around the same CTL range. Which was about 50-52. That was on 6.5-7 hours a week.
But now, training using the hobby jogger Norway method, I can reach that higher CTL, for the same time training. Everything I've played around with in both sports, suggests all CTL is created roughly equal. So in that sense, I could go back to running more of a classic running approach, ditch the Norway model , get a CTL of say 60 - and be around the same for 5k I am now. The problem being, it would take me more than 7 hours to get there. Maybe 9. I can't quite squeeze that in. So for the hobby jogger with a life outside of running, the Norwegian model probably gives you the best bang for your buck, even outside of doing doubles. Which I suspect is what Kristoffer, the oldest Ingebrigtsten brother, is doing.
In terms of sessions. Again, it's pretty simple. 3 easy runs a week. All under 70% of max HR which is usually about 65% of MAS for those who work in paces as well. This will keep you definitely under LT1. Long run, I tend to just keep the same and by the end I'll be almost at the upper limit of that 70% which is the goal. I think the recent studies which was excellent, on the training characteristics of long distance elite runners (2022) had easy characterised as under 70% Max HR. That seems slow. It is slow. Very slow.
The rest of the sessions are anything from 25x400 to 3x3k.
25x400 is probably around 98-99% of Tinman's CV.
10x1k is around 12-15k pace.
5x2k is around HM pace.
6x1600 right around 10 mile pace.
I run everyday, so it's 3x easy, 1x long at the higher end of the easy boundary and 3x of the above sessions. The only fast stuff I do is are the parkruns. I've gradually improved after a huge stagnation last year and the summer before. Keep chipping time off my 5k pb each month and have for about the last 9 months now. It was around the same for ages. It's not a quick fix, but over time if you stick to it I think most people will improve and I also have felt fresher than I ever have. Also less niggles, I equate that to not doing the really hard and past paces anymore.
I try to stick to that to be honest. It keeps it simple and mixes up what the body is running at. The key to this though, is all short rest. 60 seconds for everything but the 400s at 30. But having had the lactate meter for a while, it will all be around 2.5-3.5 mmol. Again, I no longer test. But I tested enough for a good month or so to know it's good enough for me. But I'm a 17 min guy. If I was Jacob, id care enough to do it every session. As I said before, I think I'm within the margin of error (as my paces I've specifically set on the safer side rather than pushing it.