The AD carry can't kite you if you have boots and the utility tree friend, you're too fast in my experience. Garen can harass bottom so strongly and still help mid or top with Ghost or Teleport, I think that's where he really shines on a team. I understand the appeal of solo laning, he can benefit greatly from it, I just don't think it's always best for the team.

9/0/21 lets you ghost/exhaust/teleport as often as possible, keeps it up for team fights, gives you the speed you need, and 9% cooldown. He gets enough offense/defense from the runes, his abilities, and his first few items in my experience.

Thanks for reading and commenting, I appreciate it, and I probably will expand the guide further as I get time. =)

Many mistakes/things I dont agree with in this guide. U make some solid points, but also many wrong ones.
"Garen should NOT solo lane.". Wtf are u talking about /:
Garen early damage is so high early game, especailly if u start with doran's blade(which i recommed u do) and he can easily destroy champions like and . In bot lane is damage is just wasted. The enemy ranged AD will just harass u to no end, and if u will try to attack him he will just kite u. He defently should top, firstly, because because that's the meta, and second, cause he is a ****ing awesome solo laner.

U say that he is one of the most less item dependent champ in the game. Well that's just not true he is item dependent just like any other offtank.

I dont agree with the 9-0-21 masteries. He doesn't gain that much from the utility tree, I feel that the offense tree is better for him, especially for making him even more dominating in the lane.

I strongly recommend that u pick up Flash or Ghost.

Anyway, I love the build, I agree that Garen should not be built as a carry or as a full tank, I agree with the runes.

Overall, there are many mistakes in this guide, at least in my opinion. The build is very good though. Just need a few tweaks. I also feel that the guide is too short.
I hope I helped and good luck with ur guide :)