Yes it is. Free running is a sport
Running Free was created in 1919-02.
free running shoes
It will be millions of domain names that begin with the word free.
Running Free - film - was created on 2000-06-02.
Running Free - Dragon album - was created in 1977.
Anyone can do free running or become a free runner, but if you are looking for a role type; I would say an athlete.
You continue to train with free running (or parkour), your body will adjust to it and progress in it.
Yes, they could. Though it is not common to see girls perform Parkour[Free running]. Feel free to do it, but use precaution. (:
An astable multivibrator does not require an input clock, therefore can be described as "free-running" in that its running without a reference.
They mean that your running the game
No it is not. Free running is illegal only if done in someone Else's private property.