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

Other days

my little pony

My Little Pony Day
pampering

Pampering Day
comfy

Comfy Day
mean girls

Mean Girls Day
boba

Boba Day
hiv awareness

Hiv Awareness Day
bounce

Bounce Day
stress awareness

Stress Awareness Day
gum

Gum Day
coffee

Coffee Day