It was Svahn's first win in a distance race in the World Cup.
She snuck in all the time and gained a position when the riders entered the stadium area and the sprint track where she won yesterday.
- Linn Svahn has ridden a tactically perfect race and saved power all the time, says the expert Anders Blomquist.
Svahn extended the lead in the Tour de Ski and has now won the first two stages.
Fragile Frida Karlsson was about to go loose uphill on several occasions but was caught downhill.
She was third
Karlsson took the lead immediately and took home a maximum of 15 bonus points on the pass after 3.3 km.
At 6.2 km, Karlsson had the lead just before Ebba Andersson, then fell through, and it was a small gap of 4-5 seconds down to a pursuing group.
Before the last lap, Karlsson had been caught off guard by Diggins who got the others with him.
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Frida Karlsson: I do not know if I could have had a better start