Terland started her career in Nærbø IL before she transferred to Bryne at the age of 13. At Bryne she played mostly at the boys' team at her age, but also got a few matches for the women's team, which played in the third division (the fourth level of Norwegian football). Before she turned 16, she was already considered one of the country's greatest talents at her age.[3]
Klepp
In December 2016 it became official that Terland had signed for Olli Harder and Klepp. At that point, she had already trained with the club for the entire previous season.[4] At the age of 15, on 17 April 2017, she got her debut in Toppserien, the highest level in Norway. She started the match, which was the first of the season and against last year's winners LSK kvinner.[5] The year after, in 2018, she played a role in Klepp getting an impressive silver medal in Toppserien.
In April 2019, Terland got an overuse injury. At that point she played for both Klepp's team in Toppserien and the U19 team, in addition to the U19 national team.[6] She got back to play during the Fall, and her first match after the injury in Toppserien was 15 September 2019.[7]
Despite the injury, she was named the greatest female talent in Norwegian football in 2019 in the Norwegian newspaper Aftenposten.[8]
Sandviken/Brann
In November 2020, Sandviken announced that they had signed Terland and one of her teammates from Klepp, Tuva Hansen.[9] Together they won Toppserien in 2021.
In January 2022, UEFA published a list over 10 female footballers to watch out for in 2022, which included Terland.[10]
20 March 2022, Terland became the first player to score a goal in Toppserien for Brann's women's team,[11] as the team changed from Sandviken to Brann before the 2022 season.[12]
Brighton & Hove Albion
On 1 August 2022, Brighton & Hove Albion announced that Terland had signed a two-year contract with them.[13] At the start off the 2023–24 season, she scored five goals in six matches.[14] In Brighton's first league game of 2024, Terland scored twice in the 3–2 victory over Bristol City, including the game-winner in the 95th minute, helping the team to move six points clear of relegation.[15][16] In the away game against Leicester City, she scored to make it 3–2 in the 85th minute, giving her team the victory.[17] Terland departed Brighton at the end of her contract.[18]
Manchester United
On 17 July 2024, it was announced that Terland had signed for Manchester United on a two-year deal with the option for a further year.[19][20] She made her debut on 21 September, starting in an opening day 3–0 win at Old Trafford.[21] She scored her first two goals for the club on 13 October, against Tottenham Hotspur in a 3-0 WSL win. Both goals were assisted by fellow Norway international Celin Bizet.[22]
International career
Terland has played matches for several Norway youth nation teams, including U15, U16, U17 and U19.[23] In her first match with the U15-team against Sweden in 2015, she had two assists.[24] In 2019, she was part of the team that took part in the UEFA Under-19 championship in Scotland.[25]
In October 2019, Terland was called up to the Norway national team for the first time. She made her debut for the Norway national team on 8 April 2021, coming on as a substitute for Amalie Eikeland against Belgium.[26][27][28] Terland was part of the Norway national team during the Euro 2022.[29]
In the first game after the European Championship, the crucial game to win the group in qualifying for the 2023 World Cup against Belgium, she was in the starting XI and won 1–0 with her team, which meant that the Norwegians qualified for the World Cup.[30]