Idealist,
Not trying to pre-empt your MD, but if you are not already taking some, consider taking 400iu daily of Vit E. It helped a female friend with clots and some serious varicose veins.
To answer JEH (in thanks for the appreciative words) who is ?impatient? to get in shape.
"Tempo" runs are overrated, and can soon lead to stagnation in performance if done too often. Let me offer an alternative idea...
I believe that no run should be a drag. If a thing is a chore to perform, a bummer to do, you will not keep it up for very long. So, where miles and miles of easy running with a low HR might be the ideal thing for you to do coming back from a long lay-off, it can get to where it is just a complete bore if you are doing it all the time.
Which is wrong. Running is something we love, isn?t it? It should definitely be something we look forward to doing. You can try all the tricks like running in nice areas and with slower friends and wearing a walkman... But they don?t work. There?s no buzz. No blast like having completed a run that fills the soul for the next week.
Coming back from a lay-off, you are obviously not able to jump back into full training. So, think about it like this; first you need to get fit enough to be able to do the training that will get you fitter. Like steps on a ladder. First you need some general fitness, and you need to have got back into the habit of running daily again (sometimes the hardest thing).
I am assuming here that you have no latent injuries that preclude hard running.
Now the following advice will not get you race fast, (Idealist is right about there being no real short-cuts) but it should serve to keep the morale high while increasing your general fitness to where you can increase the amount of running you can handle per week (and get you to a stage where you are back to your own ?full training?, whatever that means to you).
1. Find a nice 3-mile stretch of road / park that you know you could boogie on. No serious uphills. No heavy traffic. And definitely no traffic lights to cross. Maybe it?s even a little downhill overall to help you a bit. You?ve figured it?s maybe 18-20 mins hard running. No need to measure it. Warm up with some 10 mins easy jog and just go for it. Try and run as fast as you can for the whole 3 miles without having to seriously back off the pace at any time. Walk/jog home. Run this once per week and try and improve your time at least every 2 weeks. There is no definite day for this run (like every Tues), just be sure you are ready when you do it.
2. Plan an interesting route that should take 75-90 mins tops. Jog the first 5-10 mins to get into the groove and then run a strong pace you are sure you can manage to hold for the whole run without having to back off at any time. Run this once per week.
3. Lastly, find a route that takes about 45 mins. As usual, warm up with an easy 5-8 mins jog and run strong for the rest of the way. This run can be somewhat hilly. Short, steep inclines are better than long killing drags. Work the uphills and slow jog the downhills. Run this once per week.
Do no other runs the rest of the week. Just take as many days off to recover to be able to do the next run. Note, you can have 8-day weeks if you need to for the first 3 weeks.
Do not run the same run twice in a row.
Run only these 3 runs per week for the first 3 weeks. On week 4, add in a fourth run; an easy jog of 45 mins. On week 7, add a fifth run into your week; a second easy jog day of 45 mins. On week 10 add in a third easy jog day of 45 mins for your sixth day.
After 10 weeks, you can once again call yourself a serious runner. You will not be race fit. Indeed you can still be as much as 1-2 mins off your 10k PR, but you will now be fit enough to deal with a training schedule that more seriously aims you towards your particular racing ambitions.
To paraphrase Churchill: This is not the end. This is not even the beginning of the end. It is just the end of the beginning.