Date of Birth: 
About Lotta Udnes Weng
- Lotta Udnes Weng (born 29 September 1996) is a Norwegian cross-country skier. At the 2014, 2015 and 2016 Junior World Championships she won four silver medals (one in relay), one bronze and one gold medal (both in relay).
- As an U23 junior she competed at the 2017 and 2018 Junior World Championships, bagging a gold medal from the 2017 skiathlon.She made her World Cup debut in March 2015 in Drammen, and collected her first World Cup points in December 2016 in Lillehammer with a 22nd place in the 5 kilometres race.
- She broke the top 20 for the first time in the 2016–2017 Tour de Ski Oberstdorf skiathlon, and in December–January 2018–19 she broke the top 10 four times.
- She also made her World Championships debut in 2019, finishing 32nd in the sprint.Weng represents the sports club Nes Ski.
- She is the twin sister of Tiril Udnes Weng and a third cousin of Heidi Weng.
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