Another slow "speed" workout 6x1 mile

I could not believe that I can only run the first mile ok.
All the rest are totally like half marathon pace or marathon pace.
Do not know why. But the training is almost over.

Split	Time	Distance	Avg Pace
Summary	1:38:59.0	11.25	8:48
1	18:10.6	2.00	9:05
2	7:08.0	1.00	7:08
3	2:25.2	0.25	9:41
4	7:30.5	1.00	7:31
5	2:37.9	0.25	10:32
6	7:28.8	1.00	7:29
7	3:27.2	0.25	13:49
8	7:46.5	1.00	7:47
9	3:37.6	0.25	14:31
10	7:56.8	1.00	7:57
11	2:36.7	0.25	10:27
12	8:24.5	1.00	8:25
13	19:48.5	2.00	9:54