Leveled 60 characters to level 60. It took about a year and a half and finished 2 days before pre-patch. No boosting, no questing, just grinding rested exp. : r/classicwow
WoW Classic: How to Level a Boosted Character from 58 to 60 Fast | Digital Trends
Boost to level 100 | WoWWiki | Fandom
Free Character Boost? : r/wow
Buy WoW Classic TBC Level 60 Boosting Service | WowVendor
Shadowlands Character Boost Guide - Wowhead
Wowhead💙 on Twitter: "Celebrate 15 years of WoW by reaching level 60 in Classic to receive Battle for Azeroth and a level 110 boost for free! https://t.co/SgBBJoExzx https://t.co/L2YCV32kDA" / Twitter
60 Characters to Level 60 in Vanilla Classic - Before BCC! - News - Icy Veins