Originally Posted by
agarose2000
I strongly, strongly suspect that you need to increase your weekly mileage above all.
I agree.
Back when I raced 5k's, 5 miles would be an off day - day before a race. Normal training days would be 8-12 miles. 5 days a week. Before that when I raced 400m races, 3-4 miles warm up followed by a bunch of intervals, then another mile or two at a slow cool-down training pace.