Overtraining?

Searching the internet it didn't give a definite definition, but usually listed all the signs and symptoms. The descriptions are almost the same: sudden drop of performance, after a long training, demotivated, and something caught my attention is "it is often too little of rest" and unless one monitor wake up heart rate often, or having other means to measure physiology parameters, "psychological state is a better diagnostic tool". However, some also indicate that it's hard to get overtraining than people usually think.

The question hit me when I was lying on bed reluctant to wake up for time trial on Saturday morning. Battling in my mind to skip it. However, I tried to wake up, had some light meal and went for a short nap as usual. And this time, I didn't wake up for the run. I gave myself excuses not to.

For the past few weeks, no matter how tough the time table was, I'll still hit the road. If the time not permit, I'll adjust to skip recovery days. But on Sat morning the motivation is not there. On the same evening, feeling able to run, put on shoes for 8 k time trial, but was harder to push than usual and stop at 5 km. It was more difficult than a 10km tempo run. This is not right.

On Sunday morning, out for 29 km long run, feeling ok before run. However, just a few steps and know condition is not good. Continue a few km, decided to turn back and done 8 km at recovery pace.

Something is there I know. Something cause the changes. Reading online, I found some similarity from other's experience.

Continuous week of high mileage training, and I didn't miss any quality training (medium long run, tempo, interval, long run). As compared to all previous training, I did missed some important workout due to work or travel. This time consider toughest one I've done.

I'm at almost the end of a training cycle. Some other people face the same when the race is near. Seeing improvement from the training, and suddenly one day everything went wrong. Discounting yourself from poor performance, finding excuses. Start to think about rest and recovery. Sometimes not even able to recover for a good planned race.

Analyzed retrospectively, it didn't happen without sign. Past few weeks been busy, and I still try to fit in run, a few times by wake up very early. Although sleeping been maintain around 6-7 hrs, but the tiredness was there during the day.
Early of this week I had first incidence of oversleep for the run.
Not been eating well.
On Wed medium long run, was seeing stars at the last 3 km.
All and all, I guess is enough to tell me something is wrong.

I hope the condition is not as bad as I thought. Hopefully few days of rest can recover. It's hard to say.
Was reading on this 3 sites regarding overtraining
1) Are You Overtraining?
2) http://www.letsrun.com/forum/flat_read.php?thread=5105708
3) http://www.letsrun.com/overtrain.html

Week -6 (03-17-14 to 03-23-14)

Day		Distance	Time	Speed	Route
Mon (Mar 17 14)		6.2 kilometers	37:02 min	6:01 min/kilometer
	Recovery
Tue (Mar 18 14)		14.2 kilometers	1:15:57 min	5:20 min/kilometer
	VO2max, Notes: 14 km with 5x600m at 5 k pace target 3:54/km Splits: 3:57, 3:51, 3:45, 3:56, 3:47
Wed (Mar 19 14)		24 kilometers	2:01:43 min	5:04 min/kilometer
	Medium-long run, Notes: Tough tired run. Seeing starts at the last 3 km.
Thu (Mar 20 14)		11 kilometers	1:03:45 min	5:47 min/kilometer
	Recovery, Notes: with 6 x 100 m strides
Fri (Mar 21 14)		10 kilometers	59:37 min	5:57 min/kilometer
	Recovery
Sat (Mar 22 14)		1.5 kilometers	8:23 min	5:47 min/kilometer
	Warm up
		5 kilometers	20:22 min	4:04 min/kilometer
	Time Trial
		2.2 kilometers	14:13 min	6:37 min/kilometer
	Cool down
Sun (Mar 23 14)		8 kilometers	46:17 min	5:47 min/kilometer
	Notes: Gave up 29 km long run after noticing tiredness.

• 	Run Distance:	82.02 kilometers
  	Run Time:	7:27:19 min
  	Total Time:	7:27:19 min