Sub45 10km training! began Aug28

[MrM]

2017/8/12
10km 45min23sec
4:18, 4:14, 4:17, 4:22, 4:34
4:41, 4:51, 4:43, 4:53, 4:25

very very bad. last 2 10km session.

after 3km cant keep up the pace and legs feels heavy.
5km session and lsd could do 4:30 at least 5 km but why this 10 km session like this bad.

is 1km session too fast? or need more rest?



Today was the end of 3rd cycle. Can i do 1 more cycle?