World Champions at Sweden’s Biggest Boat Show: Wiberg Siblings to Appear at Allt för sjön

Sweden’s largest indoor boat show opens in Stockholm this week, and the Smedjebackens Båtklubb stand will have company worth travelling for. The 2025 UIM F2 World Champion Mathilda Wiberg and her brother Hilmer, runner-up in the same championship, will both appear at the club’s exhibit during the two-weekend event.

Allt för sjön, billed as Sweden’s oldest, largest and most-visited indoor marine show, runs across two weekends at Stockholmsmässan in Älvsjö. The first runs March 5-8 and the second March 12-15. Smedjebackens Båtklubb, Dalarna’s largest club with 640 members, has a regular presence at the show. This year it brings a rather different kind of attraction.

The Wibergs at the Show

Both Mathilda Wiberg and her brother Hilmer will attend on different days during the show. Last year Mathilda won the F2 World Championship and Hilmer came second.
– Lennart Silfverin, chairman, Smedjebackens Båtklubb

Silfverin confirmed the arrangement to local newspaper Nya Ludvika Tidning. No specific days have been announced for either appearance.

Mathilda Wiberg

Mathilda’s 2025 title was no ordinary championship win. The 22-year-old from Åkersberga became the first woman ever to win a Formula-class world championship in any form of motorsport, claiming the UIM F2 title at the Grand Prix of Portugal II in Vila Velha de Ródão on September 21, 2025. She started from second on the grid and led from the opening corner after pole-sitter Peter Morin retired with a blown fuse, winning by 1.968 seconds over Edgaras Riabko to claim the title with 54 points.

The Union Internationale Motonautique named her 2025 UIM Driver of the Year in January, the first female driver to receive the award. Her path to the title was far from straightforward – she scored just two points from the opening round at Brindisi, leaving many to write off her chances before the season had properly begun. A dominant 20-point haul at Klaipeda turned the championship on its head.

Her wider career record reflects consistent progression: the 2019 Offshore 3J World Championship, the 2021 F4 European Championship, third place at the 2022 F4 Worlds, and the 2023 S3 World Championship, all under the Wiberg Racing banner. She also serves as co-team principal for Aoki Racing in the E1 Series.

Hilmer Wiberg

Hilmer, Mathilda’s younger brother, finished second in the 2025 F2 championship – a result made all the more notable because it was his first season in the class. He arrived at the opening round in Lithuania having never previously raced an F2 boat, with no practice before the event, and took third.

I was really pleased with my third in Lithuania, it was my first time in an F2 boat and I had no practice before the event. It was beyond expectations.
– Hilmer Wiberg

He went on to claim bronze at the F2 European Championship in Kaunas and led the World Championship standings going into the Portuguese finale. A rod through the engine block in the closing stages ended what had looked like a certain third place, and with it his title challenge. He finished the season 15 points behind Mathilda, his 14th career medal in a record that already included three World Championship victories across GT15, GT30 and the 3J class.

I am really proud of my sister, she deserves the win. It was really a great season and hope to make the next one even better.
– Hilmer Wiberg

The whole 2025 season was run under a strict no team orders policy by their father Andreas, who manages both drivers. The siblings were genuine championship rivals from the opening round – a dynamic their father maintained throughout, leaving the title to be settled on track performance alone.

A Family Connection Going Back to 1933

The Wibergs’ link to Smedjebackens Båtklubb runs deeper than their current success. When the club held its very first race in 1933, the man acting as starter was the Wiberg siblings’ great-great-grandfather. The club, now Dalarna’s largest with over 90 years of racing history, has watched the family go from that founding moment to the top of international circuit powerboat racing.

About Allt för sjön

Allt för sjön is held at Stockholmsmässan, Mässvägen 1, Älvsjö – nine minutes from Stockholm City by commuter train, with parking for 2,000 vehicles on site. The Classic Boat Show runs as a permanent feature within the event, described as the world’s largest display of Swedish classic boats in wood and plastic.

Adult day tickets are 199 SEK online. Children aged 7-14 enter free. A family ticket covering two adults and unlimited children is 349 SEK. The Grand Opening Night on Thursday March 5 (17.00-21.00) is ticketed separately at 120 SEK. Tickets bought at the door carry a 50 SEK service charge. During the first weekend, the same ticket also covers entry to Nya Antikmässan and Stockholm Husvagn Husbil, which run concurrently. Tickets are available at ticket.stockholmsmassan.se.