regressing in my running

check your iron.

overtraining?

iron fine. Overtraining is a possibility. But how do I really know I'm overtraining. If I post the general flow of my training the past year, will that help?

You're getting old!

What's "30 something"? 31? 39? Might make a difference, but even aging shouldn't make it that dramatic.

would like to be faster wrote:

iron fine. Overtraining is a possibility. But how do I really know I'm overtraining. If I post the general flow of my training the past year, will that help?

Did you get your ferritin tested? You want to strive to be >50, and preferably 60-70. The only way you're going to achieve is through iron supplementation. I think a lot of runners see the "normal range" (which can vary significantly depending on who's testing), and think as long as they're within that range, it's ok. That may be ok for a normal, sedentary person, but not for an endurance athlete. We need to be much higher.

So I'm also going with the iron/ferritin likely being low.

Assuming it's not the iron, maybe you're getting slower not 'despite no break in training,' but because of no break in training. Have you taken a 3-4 week break at any time in the last 2 years? Something like this helps many runners in the long term.

you're a woman? its not unusual for women to lose performance as their bodies mature from skinny teenagers to fuller women. seeing how you're comparing your current age to your earlier thirties, i'd say its probably your age, not your coach

we can't all be lagat and geb

My ferritin is 32 ng/dL, so according to the posted ranges, it is a tad low.

For the poster who said it's my age -- I'm talking about getting slower from April of this year to July of this same year, not a change over years.

Is it ever possible that the sequence of training, or being impatient with training could lead to a regression in times? I feel like maybe I didn't spend enough time building a base or enough time doing strength runs, before going into interval type training. But, I'm not exactly sure on what I should have done, so I'm not confident in making this assessment for myself.

April is the spring...

July is the summer...

You're not comparing apples to apples.

Plus you're getting older...welcome to life as a 30-something. You can start to get slower for no apparent reason. I'd suggest strength training and more pronounced "recovery". Remember when you used to blaze your easy runs? Don't. Remember when your easy runs used to be long? Don't. Structure your week, month, year, so that you get enough recovery.

Most runners train too hard, too often and when they begin to falter they do the exact opposite of what they should do...they train harder.

You can not train more than your ability to recover. Your ability to recovery decreases with age. Your ability to recovery can increase through proper diet and strength training.

Alan

Check your vitamin D levels too.

have you been getting enough sex? Lack of sex has been proven to have a negative performance effect.

I'm guessing it's a high intensity low mileage program. Try decreasing the intensity and increasing the volume.

High intensity low mileage is a good description. So, when you suggest decreasing the intensity, and increasing the volume, how would you go about this? Would you do just one tough work-out per/week -- either short and fast or threshold - but not both in one week? And my mileage is 30-35 -- how much do you think that should increase? What should the timeframe be?