What is the distance that excuses a man from performing prayer in the mosque, and is a distance of 20 minutes considered an excuse for that?

Men must attend congregational prayers in the mosque, and failure to do so is a sign of hypocrisy. Congregational prayer is obligatory for anyone who hears the call to prayer from the mosque in the voice of the muezzin. However, whoever does not hear the call except through a loudspeaker is not obligated to attend the mosque; they may pray congregationally with their family, and if they do attend, their reward will be greater.