How does one balance training for marathons against making a real long term improvement?
I've ran 17:30 for 5k, 35:30 for 10k, 1:19 for the half and 2:54 for the full - and while I feel that I should be able to convert those 10k/HM times to better full (perhaps 2:47 or something might be reasonable) in the short term, I sort of feel that long term I will always be limited by my 5k/10k times...
So my thinking revolves around putting marathons to one side for the time being, and focusing on bringing my 5k down in to the 16's and 15's if possible - all in the hope that LONG TERM I might be able to touch sub 2:30 for the marathon (which may prove impossible, but if you don't try you'll never know right?)
To put it another way; when I focus on endurance, running 18-20 mile long runs, keeping mileage upwards of 70 per week - I find that my shorter distance times tend to stagnate. My half time went backwards by a minute during my last marathon cycle, but I was able to drop 5 mins off my time for the full.
Does it have to be a case of putting marathons to one side for a year or two, and coming back to them? Or can 5k to marathon improvements be made concurrently?
I'm 34 male also, so time isn't really on my side. Didn't start running until 27 though. Training is currently 60-70mpw, with a long run and normally one midweek workout of intervals. I find the recovery from the long run needs 3 easy days (if I get in the 2:20 to 2:40 range) which seems excessive; but that's another question.