Judgment deals maximum damage when only hitting a single target. For effective trading, try to position such that only the enemy champion is hit.
Garen's regeneration greatly increases if he can avoid receiving damage for several seconds.
Garen is only constrained by cooldowns, making items such as Black Cleaver very effective for him.
Katarina's abilities deal magic damage, so even if she's building Attack Damage items, get magic resistance to counter her.
Try to save a disable for when Katarina uses her Death Lotus.
The stats provided here emphasize some critical Garen vs. Katarina counter stats that may help us understand the differences and similarities between these two champions. For instance, Garen’s KDA ratio ([kills + assists] / deaths) of NaN is more than Katarina’s ratio of NaN, showing that Garen may be more central to his team's team fighting capability than Katarina..
Garen typically has a slightly smaller longest killing spree than his opponent does. Commonly, he takes more damage than Katarina. This often reflects different amounts of tankyness; however, it can also indicate that the one champion has less agility and thus is not able to escape further damage when poked or engaged.
Both LoL champs are great champions. Both champs have their pros and cons. In League's current meta, Garen usually wins when taking on Katarina, with a 52.9% win rate. Therefore, Garen makes a good counter for Katarina.
While Garen does have a higher winrate than Katarina, when they face off with one another, Garen also has a lower difficulty level that makes him a less challenging champ to pick up and master. You should be be fine when picking Garen into Katarina.
Furthermore, Garen has only a small amount of CC and other utility, a similar amount to Katarina. This often makes her just as valuable during team fights, especially when facing champions with a ton of burst damage.
While there is not a single best champion in League of Legends, in Garen vs Katarina matchups, Garen is the better champ with a noticably higher win rate, less champion complexity, and a similar amount of utility to help out your allied champions during late stage team fights.
Garen is an above average counter to Katarina. Make sure you focus your gameplay on keeping up your CS and destroying objectives. If you are able to do that, you should do very well as Garen against Katarina.
If you would like to truly master Garen to counter Katarina during both the early game and mid / late game phases of League of Legends, you should continue reading to gather a few extra tips and tricks for this matchup. If you pay attention to the build and tips displayed above, you should increase your win rate by a lot and be that much closer to League of Legends pro players.
Garen often accumulates a similar amount of CS as Katarina. Champs who on average don't get many minion kills usualy don't need much CS to be effective, such as supports. They are able to scale properly off of their skills, stats, and first items alone. Yet, champs with a lot of CS, such as hyper-carries, often require a lot of items to be effective. In either situation, try to exceed the values shown on this page to do well.
The best items to have in your Garen versus Katarina build include Stridebreaker, Sterak's Gage, and Dead Man's Plate. When Garen used at least these three items in his build, he did much better countering Katarina than with most other common counter builds. In fact, Garen had an average winrate of 52.9% when playing against Katarina with this counter build.
To have the best chance of crushing Katarina as Garen, you should equip the Conqueror, Triumph, Legend: Tenacity, Last Stand, Bone Plating, and Unflinching runes from the Precision and Resolve rune sets. Of all the rune sets players used for Garen vs Katarina counterpicks, this combination of runes yielded the highest win rate. Moreover, these runes averaged a 52.9% winrate overall.
By default, tips, statistics, and builds on how to beat Katarina as Garen are shown for every ranked division. To narrow the statistics and builds to a distinct player tier, you may use the selection menu at the top of this page.