Garen Runes explained
There's one set of runes for Garen on patch 15.2 that is the clear favorite for LoL players and pros alike. The best Garen rune paths on the position 
Top are 
Sorcery as the primary path and 
Resolve as the secondary path with a pick rate of 48%. Besides picking runes on Garen you should learn how to play Garen and if you are interested in pro matches take a look on how a pro builds Garen. If you want to discuss 
Garen then you should visit the champion subreddit.
Garen runes from primary path
Sorcery empoweres abilities of Garen and increases the available champion resources. Most of high elo players – and our LoL pros in the the major regions – have agreed that 
Phase Rush is the best keystone rune to run on Garen. Phase Rush offers more flexibility and options to betake oneself in and out of danger, which can be helpful since that's essentially the main playstyle of Garen. Other primary runes on Garen are 
Axiom Arcanist, 
Celerity and 
Gathering Storm.
Axiom Arcanist grants you a shield, as soon as Garen gets hurt by alot of magic damage. This rune will help you alot to survive against ability power champions with a lot of burst damage. Celerity boosts all movement speed bonuses to Garen. Gathering Storm increases your late game power.
Garen runes from secondary path
When it comes to your secondary path, most Garen players prefer to go with Resolve. Resolve empowers the survivability of Garen and increases the tankiness. On the Resolve path, the best runes for Garen are Overgrowth and Demolish.
Overgrowth increases your maximum amount of health. Demolish increases your pressure on the enemy turrets. This rune will help you to punish bad roams or backtimings of your lane opponent.
FAQ for Garen Runes
Which is the best keystone rune on Garen?
The best keystone rune on Garen is Phase Rush. This Garen runes setup is then referred as Garen Phase Rush.
What runes does Garen use?
Runes from the paths Sorcery and Resolve are the most used runes on Garen. For the exact pick rates of Garen runes used, you have to study the rune distribution presented.