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

Other days

carpenters

Carpenters Day
boy friend

Boy Friend Day
cuddle up

Cuddle Up Day
nail polish

Nail Polish Day
lisp

Lisp Day
aloxolt

Aloxolt Day
gum

Gum Day
brow

Brow Day
china

China Day
tell a fairytale

Tell A Fairytale Day