doing 1km repeats on a hill, just swap the goal pace to the goal distance? so lets say I wanna run a 17 min 5k, just run my 1km repeats at 5:30 min/mile goal pace for 5 to 6 reps and take a 2min jog rest? or if I want to train for a 10k, same approach and adjust my goal pace and add a few more repeats in?