Reference article
Balancing Master (Duck Life 9: The Flock)
Travel 500 metres in balancing pro training.
Earning it
Travel 500 metres in balancing pro training. Meet the score requirement in one training attempt; separate attempts do not add together.
Trophy collection
The trophy is added to your bag when its requirement is met. Each trophy records its achievement date and is awarded once. Browse your collection in the 
Museum.