how to improve marathon time

6:04

5:07

6:53

17:01

13:30

12:37

1:42:32

4:34

22:50

12:56

2:13

17:01

13:06

14:53

14:05

11:28

11:55

6:27

13:23

3:05

8:30

13:30

1:13:48

3:25

11:28

4:16

6:45

10:28

7:16

کوتاه

5:49

5:48

2:25

7:16

8:53

4:35

8:36

12:59

15:30

27:29