What level of fitness is need to become a soccer linesman?

Answer 1

A linesman, or Assistant Referee as one would properly be called if it is a neutral match official, needs various physical fitness skills in order to effectively do the job. These include strength, endurance, flexibility, and fast-twitch reaction. Assistant Referees at the professional level are elite athletes, with athletic skills and training comparable to most players. At the recreational, amateur, and youth levels, an Assistant Referee or club/volunteer linesman does not need to have this level of fitness, though some amount of athletic prowess is recommended and desired for the good of the game.

The Assistant Referee needs to be able to run with sudden bursts of speed, change direction quickly, shuffle side-to-side, and get out of the way of incoming balls and players. An AR might run several miles during the course of the match, depending on the level of play.