A person who walks is called a pedestrian. A biped is any creature that walks on two legs, including human.
a walker
A pedestrian.
A fashion model usually walks the catwalk at a fashion show.
Say WHAAAAAAAAT?
acrobat
Pedestrian
Will get run over!
A person who walks a tightrope is called a tightrope walker or a funambulist. They have exceptional balance and coordination to perform such a daring feat.
Certain armed forces careers often involve long walks. Careers that make deliveries often require long walks, such as a postal delivery person or a newspaper delivery person. Careers involving security can require longs walks.
the path
Amble.