Reply To: U.S. Question, is interval for 50yd repeat length for 500 free too long? Home › Forums › General USRPT Topics › U.S. Question, is interval for 50yd repeat length for 500 free too long? › Reply To: U.S. Question, is interval for 50yd repeat length for 500 free too long? March 7, 2015 at 11:10 am #2387 oldschoolcParticipant 100s are on 1:30 and we test 5 x 100 for both 500/200 swimmers "Only in America. Dream in red, white and blue"