Longo got into football when she used to go with her dad, Paul, to watch her brothers, Jason and Julian, play for Eden Football Club. She joined the club which merged with Mt Roskill to become Three Kings United.
Club career
Three Kings United
Longo played for Three Kings United from when she first started playing football through all childhood and also while playing for Epsom Girls and training with the Wynton Rufer Soccer School of Excellence. She made her debut for Three Kings United senior women's football team in the Northern Premier Women's League in 2004.
Longo played football at Epsom Girls' Grammar School for their first XI, winning the NZ Secondary Schoolgirls tournament in 2009 with future international teammates Anna Green and Hannah Wall. This was after the team won the Auckland provincial championships unbeaten the year before.
Wynton Rufer Soccer School of Excellence
Longo was part of Wynton Rufer Soccer School of Excellence from 1999-2006.
Melbourne Victory
On 25 October 2019, Longo signed a one year deal with Melbourne Victory to return to the Australian W-League. She made her first appearancefor Victory in their 3–2 win over the Brisbane Roar, playing 74 minutes before getting subbed off in the second half.
International career
U-17
She scored New Zealand's first goal at the 2008 inaugural FIFA U-17 Women's World Cup although they were effectively eliminated from contention in the 1–2 loss to Denmark, having previously lost 0–1 to Canada in the opening game.
U-20
Longo also represented New Zealand at the 2006 Women's U-20 World Cup finals where she played in all three games. Longo was again included in the U-20 squad for the 2008 Women's U-20 World Cup finals to be played in Chile, featuring in two of their three group games. In 2010, she represented New Zealand at a third Under-20 World Cup, this time in Germany, appearing in all three group games.
National team
Longo at age 15, made her Football Ferns debut in a 0–3 loss to China PR on 14 November 2006, becoming New Zealand's youngest senior football international. She then went on to represented New Zealand at the 2007 FIFA Women's World Cup finals in China, where they lost to Brazil 0–5, Denmark and China PR. Longo is the second youngest player to represent any country at a senior FIFA World Cup. She played one of New Zealand's three matches in the 2011 FIFA Women's World Cup in Germany and all three matches of her country at the 2015 FIFA Women's World Cup in Canada. Longo made her 100th appearance for New Zealand in a friendly against the United States in September 2017 and is the first player in the world to compete at all U17, U20, Women’s World Cup and Olympic Games tournaments.
Personal life
She was a student at Auckland's Epsom Girls' Grammar School.. In footballing circles, she is known by the nickname "flea". In an interview Longo gave in November 2014, she said she lives in Kaiapoi but also spends half of her week in Auckland for national trainings. While in Kaiapoi, she plays for Canterbury United Pride and then spends the rest of her time coaching at the Grasshopper Soccer programme – a non-competitive programme for kids aged 2–10 years, where the focus is on fun and skill development. She said that she enjoyed working with young children and enjoyed watching them develop.
Honours
High School
NZ Secondary Schoolgirls champions: 2009
Club
Three Kings United
Northern Premier Women's League runner-ups: 2004, 2010
Northern Premier Women's League winners: 2006, 2007
