Not an exact match, but quite similar to House United:

http://www.houseind.com/fonts/unitedcollection/viewfonts

Font is called Gratton, can't find anything about it... Website has been implemented by Wieden+Kennedy.

The reason you can't find the font is because Nike creates it's own proprietary fonts. Originally they created Victory by Plazm Fonts here in Portland which no longer is running.

Nike continues to develop it's own proprietary fonts for brand differentiation. They now have a collection of typefaces, you can't buy them.

Wieden + Kennedy is here in Portland as well, they are Nike's ad agency of record.

Does anyone know if I can use this font called Gratton on a project or this is exclusively by Nike?