More in terms of time, although if someone has the actual XP number I’d be interested.
I think my first two 60s (PvE) took 13 days and 10 days /played, and I think the halfway point was somewhere in levels 45-48.
The 50s were a slog IIRC.
Edit: Prior to patch 2.3.0, when leveling was reduced by roughly 1/3:
http://wowwiki.wikia.com/wiki/Formulas:XP_To_Level
The total experience needed to reach level 60 was 4,084,700.
The total number of same-level mobs that must be killed to reach level 60 with no rest or quests was 16,971 which would take approximately 76 hours at 16 seconds per kill.
An amusing but probably not very significant figure is that the half-way point to 60 for raw experience point accumulation is 12,550 XP into level 48.
Found this, seems 13 days is roughly top 25%, many people were in the 20+ days /played for their very first toon.
https://www.mmo-champion.com/threads...Vanilla/page30
BTW it appears the world record for 1->60 was 116 hours, done in 7 days with 5 hours sleep/night. https://www.furiouspaul.com/wow/