I have seen marathon runs up-kept in other speedrun communities and I felt it might be nice to have it here as well.

Below are the ones that I am aware of -

Atzero and Faye - KH Speedrun Marathon -

Atzero - RPGLimitBreak 2018 -

TheRolePlayingGuy - BSG Annual 2018 -

RebelDragon95 - ESA Summer 2018 -

RebelDragon95 - UKSG Winter 2020 -

RebelDragon95 - ESA Winter 2020 -

If you know of anymore, I will have missed a few, please post them below.