What is Tenacity in League of Legends?

League of Legends features many stats that affect how your champion performs in fights. Tenacity is one of these stats, and it directly affects how long you remain disabled by crowd-control effects like stuns, silences, slows, taunts, and more.
Getting chain-stunned or locked down for several seconds can make a team fight disastrous, as many players don't fully grasp how tenacity works or when to prioritize it in their builds. In this article, we'll explain exactly how tenacity works in League of Legends, where to get it, and when to build it for your champion.
How Tenacity Works

Tenacity works on a percentage basis. If you have (50%) tenacity, all crowd control effects last half as long on your champion.
For example, Morgana's Dark Binding (Q) at max rank normally lasts 3 seconds. If you're running Mercury's Treads and Legend-Tenacity, you'll have around (44%) tenacity total. That 3-second stun gets reduced to roughly 1.7 seconds instead.
The difference might not sound like much, but those extra moments of movement can let you flash away from a gank, land your own abilities during a fight, or survive long enough for your team to help.
How to Get Tenacity

Items
Mercury's Treads: grants you (30%) tenacity, along with magic resistance and movement speed. These boots are the most common way to get tenacity since almost every champion builds boots.
Silvermere Dawn: provides the Quicksilver active, which removes all crowd control effects except airborne knockups and grants (50%) tenacity for 3 seconds after activation.
Sunfire Aegis (Forgefire Crest): When upgraded with Forgefire Crest, adds (5%) tenacity to all your legendary items, plus 50 health and 5% slow resistance per legendary item.
Elixir of Iron (Consumable): gives (25%) tenacity, 300 bonus health, and increases your champion's size by (15%) for 180 seconds.
Champion Abilities
Some champions have built-in tenacity in their kits. Garen, Milio, and Ornn can grant tenacity to themselves or their teammates through specific abilities. These effects usually last for a short duration but can stack with items and runes for even stronger crowd-control resistance.
Stacking Tenacity

Tenacity from different sources stacks together, but the math works differently depending on where it comes from. When you combine tenacity from different categories like items and runes, they add together normally.
However, if you get tenacity from multiple sources within the same category, they multiply instead of adding. This reduces the effectiveness of stacking similar items.
The maximum tenacity you can reach is (100%). Even at the cap, you can't make crowd-control effects disappear completely, but you can cut their duration down significantly with the right combination of items and runes.
Conclusion
Tenacity shortens crowd-control effects. Build it against teams with heavy CC, skip it when enemies have minimal disables. Some items, like Mercury's Treads, give you (30%) tenacity, which is enough for most situations.
Want to explore more? LoLDB has everything League of Legends—browse champions, skins, mythic shop rotation, current sales, and much more.

