With WoW Classic almost here, you may be planning your trip around Azeroth with zone levels in mind. Our friends at Wowhead have guides to maximize your leveling time.
WoW WotLK Classic Horde 70-80 Guide: 70-72 Howling Fjord Northrend Leveling
How To Get Level 80 Quickly In WoW: WotLK Classic
A pocket guide to leveling through all the zones in WoW Classic, for that moment when you run out of quests.
Nightfall's WoW Classic Horde Leveling Guide - Warcraft Tavern
Zones Archives Blizzard Watch
Classic WoW: 10 Memorable Horde Leveling Zones, horde
World of Warcraft's new leveling system fixes the biggest barrier to entry - Polygon
World of Warcraft Hardcore: Best Alliance Leveling Route (1-60)
Classic WoW: Best Places To Level From 55 To 70, Ranked
Zygor Guides
Dragonflight Leveling Guide: Dragon Isles Fast Leveling In a Nutshell - WoW: Dragonflight Articles