Warrior Runes and Locations - WoW SoD

Horde gets Endless Rage from the Horde Warbanner in the Crossroads, Barrens. Take it to Northwatch Hold and replace the Alliance banner at the top of the hill with the Horde one, summoning a fearing enemy that will give you the Rune once defeated. 

Alliance gets Endless Rage from killing rare / named mobs in early leveling zones past the 1-6 starter zone. We have reports of it dropping from Lady Sedonax in Darkshore, or Old Murk-Eye in Westfall, for example.

Orcs and Trolls get it by killing Centaur, Harpy, and Quillboar for their heads, which can be turned in at NPCs in Razor Hill for the Rune components. 

Taurens get it by killing Gnolls (south), Harpy (north), and Quillboar (northeast) in Mulgore.

Undead kill Gnolls at Garren's Haunt, Bats, and Murlocs, and hand them in to Dorac Graves in the Apothecarium, near the alchemists, in the Undercity.

Humans must trade Murloc and Kobold heads in Stormwind's Old Town area, while Dwarves and Gnomes need a Wendigo Paw to turn in at Kharanos.

Night Elves must hunt Tiger, Owls, and Spiders and trade their heads to Delwynna around 63,22 in Darnassus.

Reach Friendly reputation with the new Durotar Supply and Logistics faction on Horde, or equivalent Azeroth Commerce Authority in the Alliance and buy the rune for 2 gold. You can increase your reputation with these factions by turning in Supply Shipment green items randomly looted from world content, preferably after combining them with the profession materials requested in their description in order to increase the reputation and amount of currency awarded.

Horde players can get this Rune by talking to Kilxx in the Ratchet docks in the Barrens zone. Purchase a Fishing Harpoon, head into the bay area and find the shark Bruuz near a boat at the bottom. Use the Harpoon to weaken him and kill him for the Rune.

Alliance players get this by farming Troggs around the 26,50 map coordinates in Loch Modan for a locked skull, which can be opened by getting hit by the knockdown ability from the nearby Stonesplitter Skullthumper around 36,80.

Orc and Trolls can speak to Zamja in Orgrimmar, and afterwards kill Gru'ark outside of the cooking hut to get the Rune. 

Tauren talk to Netali Proudwind in the Spirit Rise in Thunder Bluff and beat Mooart for the Rune.

Undeads can instead speak to Penny Hawkins at the Inn in Brill, followed by killing Blueheart at the bottom of the inn.

Dwarves and Gnomes get it from talking to the Innkeeper, Bruuk Barleybeard in Ironforge, followed by killing Bruart, on the way to the exit.

Finally, Night Elf Warriors talk to the Dolanaar innkeeper and also kill the requested NPC for it.

Head to the Raven Hall Cemetery and enter the Crypt at 23.5,35. Turn left and look to your right inside the room to find a Decrepit Phylactery .

Now head to the Crypt at 15.5,38 and go right at the end of the path. You will find a skeleton which you can click to spawn a Lich enemy. Kill it and loot it for the Flagellation Rune!

Start by killing ogres around 50,58 on deeper into the ruins in Alterac Mountains. Alternatively, kill ogres on the ruins found around 22,65 in Arathi Highlands. Eventually you will loot Illegible Recipe , at which point you should head to Skonk, who can be found on the top of the mountain starting at 57,72.

Skonk will ask for 4 items:

Smuggler's Spice Blend can be found in the bottom part of a sunken vessel found around 20,82 in Arathi Highlands;

Hybrid Haunch , which you can obtain by killing Wild Gryphon enemies found around 83,36 in Hillsbrad Foothills;

Balmy Brew is in the basement of Angor Fortress, which you can enter around 44,31 in the Badlands;

Finally, Viscous Venom drops from Deathstrike Tarantula and other spiders found around 55,55 in the Swamp of Sorrows.

Turn these 4 items to Skonk and he will become hostile, at which point you can kill him for the Blood Surge rune.

Begin by traveling to Deadwind Pass and interact with the Dalaran Agent NPC near 52,35 to obtain Ariden's Sigil . By wearing and using this trinket you can make 7 Dark Rider enemies show themselves at certain spots in the world, which you must kill and loot to receive the rune. You will know the Dark Rider is close enough to be revealed when you gain the Dark Presence buff.

The closest rider can be found near 42,30 in Deadwind Pass;

Next, go towards nearby Swamp of Sorrows, where a rider can be found around 69,29;

Trace back your steps and head towards 23,48 in Duskwood, where a rider awaits;

Head south towards Booty Bay and take the boat to the Barrens, where you will find another rider around 52,36;

Move towards nearby Desolace where a rider patrols around 65,26;

Change continent and head to 60,40 in Arathi Highlands where another rider can be found;

Finally, head towards the Badlands, where the final rider can be found around 58,53.

Once you finally take down the final rider, return to the Dalaran Agent and turn all relics to obtain the Precise Timing rune!