comments:
johnr588 posted on r/beginnerrunning3d
Great book on the subject. Resistance Training for the Endurance Athlete book
johnr588 posted on r/beginnerrunning2w
Rather than taking random advice including mine, Richard Boergers and Angelo Gingerelli write the book on it titled Finish Strong: Resistance Training for Endurance Athletes. You can get it used or even at a library.