Hello,

I created my account about a year ago with the username "cagatay yt".

I would like to change my username to "QuantumTrick".

Thank you.

Hi you can change it in your settings.

It's your profile picture in the top right > Settings > Account > Change username.

Or it's as this link https://www.speedrun.com/settings/account

You can also only change your username once every 60 days.