Thx for all the help! I'll try all of the things u guys said!

I have a sub 1:40 down and and really want sub 1:30. I can only PB by a couple seconds per run and was wondering if their was any faster way to improve. Any help is appreciated!

My first was a 2:30. I'm still not that good and only have a 2:03. Shootin for the sub 2 hour.