Oops, it doesn't look like 'runner day' is a national day..

Other days

pick me

Pick Me Day
mean girls

Mean Girls Day
youth

Youth Day
self care

Self Care Day
healing

Healing Day
blanket fort

Blanket Fort Day
eat what you want

Eat What You Want Day
kiss a ginger

Kiss A Ginger Day
brow

Brow Day
lash

Lash Day