Alaina Mathers. Alaina and Hailie during their childhood. Alaina Mathers (May 3, 1993) is Eminem's adopted daughter, and the biological daughter of his wife's twin sister. Eminem has custody of his niece and is raising her as Hailie's sister.
Driving distance from Buffalo, NY to Niagara Falls, NY. The total driving distance from Buffalo, NY to Niagara Falls, NY is 21 miles or 34 kilometers. Your trip begins in Buffalo, New York. It ends in Niagara Falls, New York.
Unique Niagara: 1  Over 12,000 years ago, Niagara Falls extended seven miles down river to what is now Lewiston, New York and Queenston, Ontario. Over the years, the brink has eroded, sometimes as much as six feet per year, to its present site.