DCU Mercy

Peat began playing basketball at 13. Peat's mother, Marian, encouraged her to join a local basketball team in order to keep her occupied during the school summer holidays.^[4][8] Between 2005 and 2015 Peat played as a point guard for DCU Mercy, helping them win the 2007 and 2011 Basketball Ireland Women's Superleague titles.^{[12][13][14][15]} She also captained DCU Mercy to two National Cup wins in 2010 and 2011 ^[5][16] and represented the team at intervarsity level.^[17] In addition to playing for DCU Mercy, Peat has also served the club in various other capacities including club captain, coach, administrator and chairperson.^[18]

Ireland international

Peat has represented the Ireland women's national basketball team at various age groups from U-16 to senior level.^[18] She made her debut for the senior team in 2006 and was co-captain during the 2009–10 season.^[5][19][20] She has also represented Ireland in EuroBasket Women qualifiers.^[21][22][23]

Club level

Peat played Ladies' Gaelic football at club level for both DCU GAA and Parnells GAA. She was a member the DCU GAA team that won three O'Connor Cup between 2009 and 2011.^{[2][7][24][25][26][27]} Peat scored 0–4 as she helped Parnells win the 2015 Dublin Ladies Intermediate Championship.^[28]

Inter-county

Peat represented Dublin at senior inter-county level and played in three All-Ireland finals, scoring 2–2. In 2009 she scored 0–1 as Dublin lost 1–9 to 0–11 to Cork.^{[20][29][30][31]} In 2010 she scored 0–1 as Dublin defeated Tyrone by 3–16 to 0–9.^[32][33][34] In 2014 she scored 2–0 as Dublin lost 2–13 to 2–12 to Cork.^{[18][20][35][36][37][38]}

Club and province

Peat was encouraged to play women's rugby union by Graham Byrne, the Dundalk F.C. trainer. He had also worked with Peat as a basketball strength and conditioning coach. Byrne's cousin, Shirley Corcoran, was the director of rugby union at Railway Union and in 2015 Peat eventually accepted a long-standing invitation to try out for the Sandymount club.^[2] Peat has also represented Leinster in the IRFU Women's Interprovincial Series.^{[1][39][40][41]}

Ireland international

Within months of taking up women's rugby union, Peat was fast-tracked into the Ireland team by Tom Tierney. On 14 November 2015 she made her international debut when she came on as a replacement in an 8–3 defeat against England in an Autumn International at Twickenham Stoop. This was only Peat's eighth ever rugby union match.^{[2][5][11][42][43]}

She represented Ireland at the 2017 Women's Rugby World Cup and was voted Ireland Women's Player of the Year.^[44]

Peat has played for Ireland in the 2016, 2017, 2018, 2019, 2020 and 2021 Women's Six Nations.^[45]

Gaelic football

Dublin

• All-Ireland Senior Ladies' Football Championship
  • Winners: 2010
  • Runners Up: 2009, 2014

DCU GAA

• O'Connor Cup
  • Winners: 2009, 2010, 2011
  • Runners Up: 2015

Parnells GAA

• Dublin Ladies Intermediate Championship
  • Winners: 2015

Basketball

DCU Mercy

• Basketball Ireland Women's Superleague
  • Winners: 2007, 2011
• National Cup
  • Winners: 2010, 2011
• National Varsity Title
  • Winners: 2007, 2008, 2012, 2014

Rugby union

Individual

• Ireland Women's Player of the Year
  • Winner: 2017