Most Popular
If you want to use the most popular Malphite Top build, you should take Flash and Teleport as your Summoner Spells. For runes, you should pick Arcane Comet as your keystone, followed by Manaflow Band, Transcendence and Scorch in the primary tree, as well as Overgrowth and Second Wind in the secondary tree. For rune shards, you want Attack Speed in offense, Health Scaling in flex and Health Scaling in defense, though it depends on the matchup. Finally, for your items, you should build Sunfire Aegis as your first item, followed by Plated Steelcaps and Thornmail. For your last 3 items, you should build Frozen Heart, Jak'Sho, The Protean and finish with Iceborn Gauntlet. For the skill order, you want to stick with Q - E - W. Right now, this build has 53.8% winrate over 7 808 matches played.
Alternative
If you're looking for alternatives, you can use Flash and Teleport as your Summoner Spells, with runes being Arcane Comet as your keystone, Manaflow Band, Transcendence and Scorch in the primary tree, and Biscuit Delivery with Cosmic Insight in the secondary tree, as well as Adaptive Force, Adaptive Force, and Health Scaling as your rune shards. The items that this build incorporates are Malignance as your first item, then Sorcerer's Shoes as a second item and Stormsurge as a third item. You want to finish the build with Shadowflame, Rabadon's Deathcap and Void Staff. As far as ability max order goes, you want to keep it Q - E - W. This build is currently sitting at a 51.8% win rate across 2 883 matches played.
Off-Meta
If you want to try an Off-Meta Malphite Top build in the current patch, try Flash and Teleport as your Summoner Spells, Arcane Comet, Manaflow Band, Transcendence and Scorch as your primary rune tree, and Overgrowth with Second Wind as your secondary tree. Use Attack Speed, Health Scaling and Health Scaling as your shards. For items in this build, you want to complete Hollow Radiance as your first item, then finish Mercury's Treads as your second item, and Thornmail as third item. The last 3 options are Frozen Heart, Jak'Sho, The Protean and Randuin's Omen. The ability order for this build is Q - E - W. As of the current patch, this build has a 49.4% win rate over 1 273 matches played.
Situational Malphite Runes and Items
Depending on the context of your game, your matchup, and enemy champions, you might want to consider building some situational items or take specific runes. Carefully examine your team, enemy team, game state , and your matchup to plan your Malphite build accordingly! For example, when it comes to rune shards, you might want to take either Armor or Magic Resist, depending on which champion you are about to lane against.
Furthermore, if you want a more detailed breakdown, you should also check out Malphite runes page.