Another nice week of work.
Knee - The knee was probably a little sore from the jumps. That was a very intense workout. There are some more gentle plyometrics & form drills you can try: Power skipping, butt kicks, high knee running, and fast cadence shuffling (http://runningtimes.com/Article.aspx?ArticleID=17578) ...click on the Pete Magill video.
For the spot under the 4th metatarsal, try buying a pack of callous cushions (
http://www.cvs.com/CVSApp/catalog/shop_product_detail.jsp?filterBy=&skuId=343228&productId=343228&navAction=jump&navCount=3
). Just stick the hole over the most painful spot and your next run should be more comfortable.
I think an elliptical could be a good compliment to sprint training, and will probably allow you to increase your cardiovascular work without overly stressing the legs. I don't know if I would replace your runs though...running really slow and easy for 30min is good for regeneration of tendons & muscles. Its a low impact way of getting blood flowing to the legs. You could try the elliptical on your off days, but I wouldn't decrease your running time.
We need to start getting you into some key workouts. I would move your track workouts to the beginning of the week, and try to slip in your hill workouts later in the week.
Try these key workouts the next 3 weeks:
week #1:
1st - 12 x 100m @ 18 seconds (2 min rest) take 10min break after rep #6 if you need to, then resume 2 min rests.
2nd - 10min warmup (20min of Fartlek) Alternate 10 x 1min fast (85%) followed by 1min slow. Finish with 10min slow. (skip hills this week)
week #2:
1st - 5 x 300m @ 57 seconds (5 min rests)
2nd - 8 x 200m hills (85% concentrate on good form)
week #3:
1st - 8 x 200m @ 37s (3 min rests)
2nd - 2m wu, 4 x 100m striders, 8 x 25m start accelerations...work on getting up to top speed as quick as possible by transferring more energy into the ground.
Let me know your paces for your easy / recovery runs.