Slow resist (or Slow resistance) is a stat that unlike tenacity, which reduces the duration of crowd control effects (including slows), reduces the strength of 
slows and self- slows. Slow resist can be obtained through champion abilities, items, and runes, and stacks additively.
Unlike tenacity, slow resist also applies to already active slows.
Increasing Slow Resist
Items
-
Boots of Swiftness: Passive: Unique – Slow Resist: Reduces the effectiveness of 
slows by 25%.
Champion abilities
Runes
Slow Immunity
- Slow immunity is different from 100% slow resist as it will remove any slows or cripples as they are applied.
Champion abilities
- Master Yi's Highlander grants him slow immunity for the duration.
- Olaf's Ragnarok grants him slow immunity for the duration.
- Sejuani's Fury of the North grants her slow immunity before and a few seconds after taking damage from enemy champions.
- Shadow Assassin's Shadow Step grants him slow immunity for the duration.
Items
- Mikael's Crucible: Active: Unique: Instantly removes all stuns, roots, taunts, fears, charms, silences and slows on an allied champion, as well as granting 2 seconds of slow immunity. Successfully cleansing an effect will also grant the target 40% bonus movement speed for 2 seconds (120 second cooldown).
Formulas
These formulas can calculate how much slow resist you have, based on your movement speed and on the slow applied to you.
- Slow Resist is the amount of slow resist you currently have.
- Final MS is your movement speed after being slowed, already considering your slow resist.
- BaseMS is your base movement speed.
- BonusMS is the sum of all additive flat movement speed bonuses.
- MS Multiplier is the sum of all additive percent movement speed bonuses.
- Slow is the strongest slow currently applied on your champion.
- Slow Resist, MS Multiplier, and Slow are percentages (e.g. 50% is 0.5 in the formula).
Formula one:
$ \pagecolor{black}\color{White} Movement\ Speed \leq 220: $ $ \pagecolor{black}\color{White} Slow Resist = 1 - ({{1 - {{FinalMS - 110} \over {(BaseMS + BonusMS) \times (1 + MS Multiplier) \times 0.5}}}) \div {Slow}} $
Formula two:
$ \pagecolor{black}\color{White} 220 \leq Movement\ Speed \leq 415: $ $ \pagecolor{black}\color{White} Slow Resist = 1 - ({{1 - {{FinalMS} \over {(BaseMS + BonusMS) \times (1 + MS Multiplier)}}}) \div {Slow}} $
Formula three:
$ \pagecolor{black}\color{White} 415 \leq Movement\ Speed \leq 490: $ $ \pagecolor{black}\color{White} Slow Resist = 1 - ({{1 - {{{{FinalMS - 475} \over {0.5}} + 490} \over {(BaseMS + BonusMS) \times (1 + MS Multiplier)}}}) \div {Slow}} $
Formula four:
$ \pagecolor{black}\color{White} Movement\ Speed \geq 490: $ $ \pagecolor{black}\color{White} Slow Resist = 1 - ({{1 - {{{{FinalMS - 415} \over {0.8}} + 415} \over {(BaseMS + BonusMS) \times (1 + MS Multiplier)}}}) \div {Slow}} $
Trivia
- Example of slow resist effect: A champion with Boots of Swiftness, a movement speed of 400 and who is affected by a 40% slow will have a movement speed of 400 × (1 − (0.4 × 0.75)) = 280, which is equal to a 30% slow without slow resist.
Last updated: December 6, 2017, patch V7.24
- The biggest amount of slow resist obtainable is 155% with Urgot.
- With this amount of slow resist, slows will no longer slow you. They will however increase your movement speed by (slow% × 55)%, stacking multiplicatively with Phase Rush's bonus.
| Offensive |  Ability power ·  Attack damage ·  Attack speed ·  Critical strike chance ·  Critical strike damage ·  Armor penetration ·  Magic penetration ·  Life steal ·  Spell vamp ·  True damage
|
|---|---|
| Defensive |   Heal and shield power ·  Health ·  Health regeneration ·  Armor ·  Magic resistance ·  Tenacity ·  Slow resist
|
| Utility |  Cooldown reduction ·  Energy ·  Energy regeneration ·  Mana ·  Mana regeneration
|
| Other |  Experience ·  Gold generation ·  Movement speed ·  Range
|
