Slind made her debut in the cross-country skiing world cup in March 2008 at Holmenkollen in Oslo over 30 km freestyle, which she finished in 44th place. At her next World Cup competition in December 2008 over 10 km classic in Davos she achieved World Cup points for the first time with 22nd place and in the same month achieved her first top 10 placement in the Scandinavian Cup with eighth place over 15 km freestyle in the Lygna Skisenter . In January 2009 she made it into the top five for the first time in the Scandinavian Cup with fifth place over 10 km in Keuruu . She then won the silver medal in the skiathlon at the U23 World Championships in 2009 in Praz de Lys Sommand . In a stage of the World Cup final in March 2009 in Falun , which was also held as a skiathlon , Slind came in 20th and finished the stage race in 25th overall. - your best result in an individual World Cup race. In December 2009 Slind won her only race in the Scandinavian Cup in Vuokatti over 10 km freestyle. At the U23 World Championships in Hinterzarten in 2010 , Slind became world champion in skiathlon. Further podiums in the Scandinavian Cup were achieved with third place each over 10 km classic and in the 10 km freestyle pursuit race in Keuruu in February 2011 as well as in the 15 km freestyle mass start races in Madona in February 2012 and in Inari in February 2013; In addition, in November 2011 she was able to reach 25th place in a World Cup race in Sjusjøen in the 10 km freestyle . In the overall standings of the Scandinavian Cup she won at the end of the 2008/09 season in eighth place, 2010/11 was Slind Third, 2011/12 Fourth and 2012/13 fifth position overall. In March 2013 she won the Flyktningerennet over 40 km classic and in April 2015 the Svalbard skimaraton over 42 km classic. In season 2016/17 it was in Toblach-Cortina , the jizerská padesátka and the Reistadløpet each third party and the Kaiser-Maximilian-run and the Vasaloppet each second and finished in third place in the Ski Classics -Gesamtwertung. In April 2018 she won the Ylläs – Levi .
After first place over 10 km freestyle at the Scandinavian Cup in Östersund at the beginning of the 2018/19 season, Slind took second place at the Ski Classics Prologue in Livigno over 28 km classic, at the Kaiser Maximilian Run and at the Engadin Skimarathon . At the Marcialonga and the Birkebeinerrennet she was third. In April 2019 she won the Reistadløpet and the Ylläs – Levi and thus achieved second place in the overall Ski Classics ranking. In the 2019/20 season, she won La Venosta and La Diagonela . In addition, she came third at the Kaiser Maximilian Run and second at the Marcialonga and thus achieved fifth place in the overall ranking of the Ski Classics.