Lol, no its not inherently racist to use the word race when talking about different types of human heritage.
It is not the scientific definition of the word race, but that is not how people generally use language.

Racism is a serious word, used to imply something serious.
To denegrate people because of their ethnicity is really wrong, but noone here was doing that.

Talking about how asians tend to be short, acandinavians pale, and people from Kenya run fast is not racism. It does not come from a place of malice.

Racism is only meaningfull as an "accusation" if it refers to something bad, if you are going to point at any type of discussion regarding how people are different and shriek "racism" all you are doing is diluting the meaning of the word.

The interesting question is why you want to throw the accusation of racism around in such a way that will make the word as harmless as calling something "blue". Eventually if that is how the word is treated people will just shrug and say: "yea, so what?"