American skiers claimed two long distance cross-country wins on the second day of the Para Nordic Skiing World Cup in Pyeongchang in South Korea.
Jacob Adicoff won the first race of his career in the men's visually impaired, at an event which is doubling as a test for next year's Winter Paralympics.
Guided by Sawyer Kesselheim, Adicoff clocked 1 hour 16.9sec to defeat Sweden's World Championship silver medallist Zebastian Modin who finished in 1:02:43.9 for silver with guide Johannes Andersson.
France's two-time Paralympic bronze medallist Thomas Clarion won another medal of that colour with guide Antoine Bollet, finishing in 1:03:28.7.
"I am feeling tired," Adicoff said.
"It was a good race, a lot of fun.
"It is good to be here testing the course ahead of next year's Paralympic Winter Games."
Oksana Masters was the second US skier to clinch gold as she won the women's sitting in 41:02.1.
The overall rankings leader led home Germany's Andrea Eskau, who finished in 42:13.3, and Norway's Birgit Skarstein who clocked 42:41.0.
In the men's sitting, South Korea's Eui Hyun Sin finished in 45:41.2 to delight his home crowd with victory.
Andrew Soule of the US was second in 46:09.6 and Canada's Chris Klebl was third in 46:15.3.
"The race went very well," said Sin.
"Much better than the World Cups in Europe because it is my country and I do not have to get used to the food and the time."
In the women's visually impaired, Austria's Carina Edlinger came home in 56:05.1 to win with guide brother Julian.
Two Ukrainians completed the podium with Olga Prylutska and guide Oleksandr Mukshyn timed at 1:00:08.3 for silver.
Bronze went to rankings leader Oksana Shyshkova who was timed at 1:02:08.6 with guide Volodymyr Ivanov.
In the men's standing, Benjamin Daviet added to his biathlon sprint win in Pyeongchang by clocking 56:35.8 for gold.
Ukraine's Ihor Reptyukh took home the silver medal in 59:58.9 with Mark Arendz of Canada third in 1:00:02.5.
Oleksandra Kononova of Ukraine won the women's standing in 55:29.2, beating compatriot Iuliia Batenkova who managed 56:53.4 for silver.
Japan's Momoko Dekijima won bronze with a time of 57:34.4.
The World Cup will continue on Monday (March 13) with cross-country sprint races.
Tomorrow sees the start of the IPC Alpine Skiing test event in Pyeongchang.
Nearly 100 athletes from 22 countries are expected for an event which will also serve as the World Cup Finals.