Vi Runes explained
There's one set of runes for Vi on patch 14.12 that is the clear favorite for LoL players and pros alike. The best Vi rune paths on the position 
Jungle are 
Precision as the primary path and 
Inspiration as the secondary path with a pick rate of 95%. Besides picking runes on Vi you should learn how to play Vi and if you are interested in pro matches take a look on how a pro builds Vi. If you want to discuss 
Vi then you should visit the champion subreddit.
Vi runes from primary path
Precision improves attack and sustained damage on Vi troughout the match. Most of high elo players – and our LoL pros in the the major regions – have agreed that 
Conqueror is the best keystone rune to run on Vi. This keystone rune provides additional power in the later stages of a game. As soon as Conqueror is fully charged, Vi deals additional damage and gains life steal. Other primary runes on Vi are 
Triumph, 
Legend: Alacrity and 
Coup de Grace.
Triumph restores on Vi a part of missing health and award bonus gold, if a champion is killed. Legend: Alacrity grants additional attack speed to Vi. Vi deals with Coup de Grace more damage to targets with low health.
Vi runes from secondary path
When it comes to your secondary path, most Vi players prefer to go with Inspiration. Inspiration opens creative opportunities on Vi troughout the match. On the Inspiration path, the best runes for Vi are 
Magical Footwear and 
Cosmic Insight.
Magical Footwear allows Vi to focus on those essential core items without the need to spend the additional 300 gold on boots. Cosmic Insight grants summoner spell and item haste.
FAQ for Vi Runes
Which is the best keystone rune on Vi?
The best keystone rune on Vi is Conqueror. This Vi runes setup is then referred as Vi Conqueror.
What runes does Vi use?
Runes from the paths Precision and Inspiration are the most used runes on Vi. For the exact pick rates of Vi runes used, you have to study the rune distribution presented.