Rumble Runes explained
There's one set of runes for Rumble on patch 14.23 that is the clear favorite for LoL players and pros alike. The best Rumble rune paths on the position 
Top are 
Sorcery as the primary path and 
Resolve as the secondary path with a pick rate of 57%. Besides picking runes on Rumble you should learn how to play Rumble and if you are interested in pro matches take a look on how a pro builds Rumble. If you want to discuss 
Rumble then you should visit the champion subreddit.
Rumble runes from primary path
Sorcery empoweres abilities of Rumble and increases the available champion resources. Most of high elo players – and our LoL pros in the the major regions – have agreed that 
Arcane Comet is the best keystone rune to run on Rumble. This keystone rune adds more damage to your abilities and increases your power in the laning phase. Other primary runes on Rumble are 
Nimbus Cloak, 
Absolute Focus 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. Absolute Focus grants additional damage while Rumble is alomst full health. Scorch increases your control in the early game.
Rumble runes from secondary path
When it comes to your secondary path, most Rumble players prefer to go with Resolve. Resolve empowers the survivability of Rumble and increases the tankiness. On the Resolve path, the best runes for Rumble are Overgrowth and Bone Plating.
Overgrowth increases your maximum amount of health. Bone Plating make Rumble overall tankier, by decreasing the amount of poke damage in the early game.
FAQ for Rumble Runes
Which is the best keystone rune on Rumble?
The best keystone rune on Rumble is Arcane Comet. This Rumble runes setup is then referred as Rumble Arcane Comet.
What runes does Rumble use?
Runes from the paths Sorcery and Resolve are the most used runes on Rumble. For the exact pick rates of Rumble runes used, you have to study the rune distribution presented.