CREATE TABLE table_2581397_4 (distance VARCHAR(255), weight__kg_ VARCHAR(255), winner_2nd VARCHAR(255))
What was the distance in the race where the weight in kg was 56 and the winner/2nd was 2nd - Fritz?
    
SQL: SELECT distance FROM table_2581397_4 WHERE weight__kg_ = "56" AND winner_2nd = "2nd - Fritz"