How to win the jungle race as Karthus against Zac · Matchup data reviewed on patch 26.15
Read from Karthus's seat: the race windows this plan plays for against Zac.
| Stage | Read | Why |
|---|---|---|
| Level 1 Clear | Even Skirmish | Dead-even at the first buff: Lay Waste melts camps at record pace — your power is tempo, not duels, while a fog-charged Elastic Slingshot knock-up opens a gank-grade engage onto you. Whoever arrives with more HP and cooldowns wins — track their clear and choose the moment, not the coin-flip. |
| Level 2 Skirmish | Even Skirmish | Neither side cleanly wins level 2 — a fog-charged Elastic Slingshot knock-up opens a gank-grade engage onto you, but Wall of Pain slows cover your disengage; keep refusing the 1v1. Trade only from full health; the first mis-step decides this, not the kits. |
| Level 3 Route | Even Skirmish | Even at the opening scuttle: your clear speed is the weapon — stay two camps ahead and never fight fair, and as the first scuttle timer lands neither of you can force it. Ward the walls he charges from and step on his blobs to starve the sustain, and contest the first scuttle only with the health lead. |
| Levels 4-5 Macro | Karthus Favoured — Take Duels | You hold the edge at 4-5, not a blowout. He charges Elastic Slingshot from fog through 4-5 and is more dangerous off your screen than on it, so meet them where the camps are, not where their laners are. |
| Level 6 Breakpoint | Requiem Favoured | Requiem cashes your farm lead into cross-map kills — press R on every low gank. Zac's six is not empty — the fog Slingshot into Let's Bounce! keeps your whole side airborne. Take the duel from even health rather than from behind, and ward his charge walls — a grounded Zac is just a sad puddle. |
| First Item Spike | Liandry's Spike | Liandry's plus your farm lead makes Defile standoffs unwinnable for Zac and your Requiem chunks brutal. You now solo Dragons early with W-E pit control. Force the enemy to fight inside your aura at every objective — or concede them on the clock. Zac's first item is a durability spike, so he does not start killing you — he starts surviving whatever you send. |
| 2+ Items Scaling | Karthus Favoured at Full Build | You are the better full-build side, narrowly. He is a fog engage with two health bars, so the first kill is only temporary, so take the duel with cooldowns up and never mid-rotation. |
Start blue-side regardless of map side preference arguments — your mana economy is your clear speed. Track Zac's entry only to know which half of your farm to bank first; you race nobody, you out-pace everybody. Zac clears steadily with blob sustain and Unstable Matter, and he never has to recall for health before six.
Ranked by the race windows in Karthus's plans — the jungle race carries no win-rate sample.
The full Karthus vs Zac report continues with scuttle & dragon rules, invade windows and safety boundaries, the top-side objective fight, macro rotations and the win condition — plus the live enemy-jungle tracker that shows their start, clear and gank timers in game.
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Karthus's race plan controls 4 of the 7 windows — Karthus holds the tempo advantage in this jungle matchup.
Not exactly — Karthus's race plan controls 4 of the 7 windows, so Zac is playing catch-up and has to lean on the map.
Playing the other side? Zac vs Karthus guide →
All Karthus jungle matchups →
More Karthus jungle matchups: vs Warwick · vs Wukong · vs Xin Zhao · vs Zyra · vs Amumu · vs Bel'Veth