How to Make the USA National Women's Gymnastics Team: A Gold Medal Timeline.

Alyssa Baumann - 3 years old

Simone Biles - 6 years old

Nia Dennis - 7 years old

Gabrielle Douglas - 6 years old

Brenna Dowell - 1 year old

Bailie Key - 3 years old

Madison Kocian - 6 years old

Maggie Nichols - 2 years old

Aly Raisman - 2 years old

Kyla Ross - 2 years old

MyKayla Skinner - 3 years old

Jordan Chiles - 6 years old

Christina Desiderio - 6 years old

Jazmyn Foberg - 4 years old

Laurie Hernandez - 5 years old

Sydney Johnson - 3 years old

Ragan Smith - 3 years old

Average Starting Age: 3.5 years old

Simone Biles - data not available (2005)

Nia Dennis - Level 5 (2007)

Gabby Douglas - Level 4 (2004)

Brenna Dowell - data not available (2004)

Bailie Key - Level 6/7 (2007)

Madison Kocian - Level 5 (2005)

Maggie Nichols - Level 7 (2006)

Aly Raisman - Level 4 (2003)

Kyla Ross - Level 6 (2005)

MyKayla Skinner - Level 6 (2005)

Jordan Chiles - Level 5 (2009)

Christina Desiderio - Level 5 (2008)

Jazmyn Foberg - Level 5 (2008)

Laurie Hernandez - Level 4 (2008)

Sydney Johnson - Pre-Opt. (2008)

Ragan Smith - Pre-Opt. (2008)

Jordan Chiles - Level 5 (2009)

Christina Desiderio - Level 5 (2008)

Jazmyn Foberg - Level 5 (2008)

Laurie Hernandez - Level 4 (2008)

Sydney Johnson - Pre-Opt. (2008)

Ragan Smith - Pre-Opt. (2008)

Average Level at 8 years old: 5

Simone Biles - Level 9 (2008)

Nia Dennis - Level 9/HOPES Elite (2010)

Gabby Douglas - Level 9 (2007)

Brenna Dowell - Level 8 (2007)

Bailie Key - Level 10/Junior Elite (2010)

Madison Kocian - Level 8 (2008)

Maggie Nichols - Level 10 (2009)

Aly Raisman - Level 8/HOPES Elite (2005)

Kyla Ross - Level 10 (2008)

MyKayla Skinner - Level 8 (2008)

Jordan Chiles - Level 10 (2012)

Christina Desiderio - Level 9 (2011)

Jazmyn Foberg - Level 9 (2011)

Laurie Hernandez - Level 9 (2011)

Sydney Johnson - Level 8 (2011)

Ragan Smith - Level 9 (2011)

Average Level: Level 8

Simone Biles - 14 (2011, from L10)

Nia Dennis - 12 (2011, from L10/Hopes)

Gabby Douglas - 12 (2008, from L10)

Brenna Dowell - 13 (2009, from L10)

Bailie Key - 11 (2010, from L10)

Madison Kocian - 12 (2009, from L9)

Maggie Nichols - 13 (2011, from L10)

Aly Raisman - 15 (2009, from L10/Hopes)

Kyla Ross - 12 (2009, from L10)

MyKayla Skinner - 12 (2009, from L10)

Jordan Chiles - 12 (2013, from L10)

Christina Desiderio - 13 (2013, from L10)

Jazmyn Foberg - 13 (2013, from L10)

Laurie Hernandez - 12 (2012, from L10)

Sydney Johnson - 13 (2013, from L10)

Average Age at Junior Elite: 12.56 years