[ak217]

In my experience, here are the things to be actively controlling: don't hunch over (keep your back relatively straight), keep your arms bent at 90 degrees and swing them moderately (not too little, not too much), don't lock out knees, don't heel strike (strike with the blade or ball of your foot, whichever you prefer). If you're swaying side to side, you may need to place your feet closer to the centerline of your body. Everything else should come naturally.

[nostromo95]

>swing them moderately (not too little, not too much)

Just had to point out this delicious tautology.

Anyway, I don't think you can sum up correct running form in words, or if you can then it's not useful. My advice would be: keep your tempo (steps/minute) around 170-180, do ankle mobility work and hip/glute strengthening. A high tempo lessens time in air each stride and thus velocity when hitting the ground, lowering impact on joints. Ankle/hip/glute work will stave off most muscular imbalances, which are the root cause of many form problems.

[adamsea]

>Just had to point out this delicious tautology. Anyway, I don't think you can sum up correct running form in words, or if you can then it's not useful. My advice would be: ....

Just had to point out this tasty contradiction. ;)

[nostromo95]

Au contraire! My tips aren't describing good form, as much as describing the conditions that lead to good form. A subtle but important difference.