Dani Day is an enrolled citizen of the Leech Lake Band of Ojibwe in Minnesota and a 1991 graduate of Bemidji High School. She earned two varsity letters each in volleyball and basketball. She earned five varsity letters for the Lumberjacks Track team, including one as an eighth grader, throwing the shot put and discus. She was elected team captain by her peers for volleyball and track. Dani held the Bemidji High School shot put record for more than 20 years with a throw of 29' 1-1/2".


The summer after graduating high school, Dani had the opportunity to compete in track meets in Germany and Austria as part of the World's Sports Exchange. The meets had teams from all over Europe as part of the European Junior National Meet. Although Team USA did not score with the European teams, Dani placed second in the shot put and third in the discus alongside Europe's best Junior’s.


In 1991, Dani received a full scholarship to Jamestown (ND) College to compete on the Jimmie volleyball team. In 1992, Dani transferred to North Dakota State University for academic reasons and walked on to the Bison track team where she was selected as team captain in 1995 and 1996. Dani held the NDSU school record in the Hammer Throw in 1996.


In 1993, Dani competed for Team Minnesota at the North American Indigenous Games in Prince Albert, Saskatchewan, Canada. She placed first in the shot put and second in the discus events. Her medals were presented to her by Indigenous track great Billy Mills. Dani also had the honor to carry the United States Flag into the stadium during the Opening Ceremony.