I'm tentatively planning a few half and full matathons this year and so went plan hunting a while back. I signed up to Strava Premium to get access to the training plans feature (but am not too impressed as you can't even personalise them or tell the system which days you prefer to run on!). I also looked at a few other free plans but nothing seems to suit me because they all make some strange assumptions like you are not very fit at all to start with or that you need to run some 08:30 min/km 5k recovery runs (I can almost walk faster than that).
So, I'm pretty much coming to the realisation that I will just keep running what suits me and I fancy, purely for fun with no fixed HM and marathon target time I am training for. I think that simply because I am so much more fitter than last year that I can pretty much crack my PB times whilst enjoying the season's running events (i.e. not be close to death at the end). I'm running a minimum of 1 HM per week at the moment, so the distance is becoming normalised in a sense, the same way 10k used to feel.
Maybe a formal training plan might be for me when I reach a point where pure and simple increased general fitness is not giving easy wins and New PBs. So maybe next year I might need a plan to nibble away at any PB times.
Does this chime with anybody else's experience? I'm thinking Miss Wobble and her "Don't over analyse it!" approach!