Australia's Noemie Fox followed in her sister's footsteps to pick up the Olympic gold medal in women's kayak cross on Monday, with Finn Butcher of New Zealand winning the men's event.

WOMEN'S RESULTS l MEN'S RESULTS

Fox's sister Jessica secured the first two golds in canoe and kayak slalom on the whitewater course, and her younger sibling made it a family affair when she came out on top in a thrilling decider.

Angele Hug took silver for France and British world No. 1 Kimberley Woods took bronze, the first Olympic medals to be handed out in the discipline as it made its debut at the Paris Games.

"I think I’m in shock, I was just so happy to make it through the semifinal, that was my goal, now just go and enjoy it. It's insane, it’s so much fun. Today just went to perfection, I enjoyed every second," Fox told reporters.

Team USA's Evy Leibfarth, who took a shock bronze in the women's C-1, came in third in her quarterfinal heat to end her run at a second medal.

In the men's race, top-ranked Joe Clarke from Great Britain had to be content with silver after getting caught up in traffic early on, allowing Butcher to move ahead, where he stayed until he crossed the finish line.

"It's crazy. I don't believe it yet. Once I got out in front and turned in front, I was like, 'No way'. Those guys are so good. I'm proud to be the champion. The first one — that's pretty sick," an elated Butcher said.

Germany's Noah Hegge came third to take the bronze in what was a very successful debut for cross racing, where racers drop into the water together and paddle frenetically through a series of downstream and upstream gates as fast as they can.

Hug's silver aside, it was a disappointing day for the French with Camille Prigent eliminated at the quarterfinal stage before teenager Titouan Castryck was sensationally knocked out, despite finishing first in his race.

With the first two in each race going through to the semis, the 19-year-old kayak slalom silver medalist cruised over the line in first place but was bumped down to third after judges decided he failed to pass the third of 10 gates on the course correctly.