Kennen Runes explained
There's one set of runes for Kennen on patch 14.23 that is the clear favorite for LoL players and pros alike. The best Kennen rune paths on the position 
Top are 
Sorcery as the primary path and 
Domination as the secondary path with a pick rate of 34%. Besides picking runes on Kennen you should learn how to play Kennen and if you are interested in pro matches take a look on how a pro builds Kennen. If you want to discuss 
Kennen then you should visit the champion subreddit.
Kennen runes from primary path
Sorcery empoweres abilities of Kennen and increases the available champion resources. Most of high elo players – and our LoL pros in the the major regions – have agreed that Summon Aery is the best keystone rune to run on Kennen. This keystone rune adds more poke damage to your abilities. And additionally grants an extra shield, whenever Kennen empowers or protects an ally with abilities. Other primary runes on Kennen are Nimbus Cloak, Transcendence and Scorch.
Nimbus Cloak, which grants movement speed upon using a summoner spell, works amazingly well with junglers in particular as they take the shortest cooldown summoner spell, Smite. Transcendence for some more Ability Haste. Scorch increases your control in the early game.
Kennen runes from secondary path
When it comes to your secondary path, most Kennen players prefer to go with Domination. Domination improves burst damage and assassination tools on Kennen. On the Domination path, the best runes for Kennen are 
Taste of Blood and 
Ultimate Hunter.
Taste of Blood heals Kennen as soon as you damage an opposing champion. Ultimate Hunter scales up Kennen ultimate haste on every unique champion takedown.
FAQ for Kennen Runes
Which is the best keystone rune on Kennen?
The best keystone rune on Kennen is Summon Aery. This Kennen runes setup is then referred as Kennen Summon Aery.
What runes does Kennen use?
Runes from the paths Sorcery and Domination are the most used runes on Kennen. For the exact pick rates of Kennen runes used, you have to study the rune distribution presented.