old hand wrote:
Of course "highhoppingworm" is right that at some point the workout is so fast that it's suggestive of much faster race times, even if she's "racing" the workout and even though the workout is not a "predictor" workout. I coach HS girls and there's no way that my typical 19:15-level runners can manage 5 x 1000 w/ 2 min rest at 3:32. That's flying.
Plus the OP already said that she is a 35 year old woman with a lot of experience and very little natural speed. She's hardly an anaerobic monster.
OP, any training issues aside, you need to go find a race or TT and update your 5k time. You might be pleasantly surprised.
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It isn't so much she is an anaerobic monster as she is aerobically deficient. I bet her mile time is better than her 5000m team even with "poor" speed on the VDOT tables. That is true for pretty much everyone who is running 30mpw. At a high level, the shorter the workout lengths, the easier it is to run them too hard. If you are doing 5x1000, you can do them at 3k pace instead of 5k pace and just overtrain a bit. Try doing 3x1600 at 3k pace instead of 5k pace and it is unlikely you can finish that 3rd rep.
Realistically until the OP goes out and runs a time trial, we are all guessing. Maybe she is in 18:20 shape so the workout is pretty close (combo of 20-50% more mileage and some workouts give you a nice PR). Maybe she is just a workout warrior who is hammering them all too hard. Set up a time trial and find out.