ENGLISH SUBTITLED FILM
Not too long ago Gerald Koopman made his debut on the marathon races. Especially thanks to his basic breeder ‘Red Bullens’ he achieved a provisional highlight in 2016 by winning 1st National NPO not-nominated marathon championship. In 2017 he was 2nd! In this film the grandmaster from Ermerveen explains everything about his system for marathon races.
Subtitles in EN-DE-FR