Quote Originally Posted by Dfess View Post
Did you take into consideration the EXP buff going on right now in wow until the next expansion drops? You have rested exp, 100% bonus exp and if you're a monk 50% monk exp plus heirlooms?
The player who managed to do 1-50 in 3h 56m 25s /played in the Shadowlands Alpha, also speedleveled a warrior from 20-120 with the Winds of Wisdom (100% bonus exp) buff. Total duration was 12h 29m 23s. This is with full preperation for speed leveling, including heirlooms, enchants, XP potions, and any other items that could help him while leveling (war drums, mount speed increase items etc.).

It'd be a bit faster as a monk, but keep in mind that the +50% monk exp buff changes to a +mastery buff upon reaching lvl 90. It also goes down to +20% upon reaching lvl 85, but only once you relog after reaching that level.