Jan Felix Knobel won the men’s decathlon at the 2008 IAAF World Junior Championships in Bydgoszcz with 7896 points, claiming the U20 world title by just two points ahead of Eduard Mikhan, with Mihail Dudaš taking bronze.

Niklas Kaul won the men’s decathlon at the 2016 IAAF World U20 Championships in Bydgoszcz with a championship-record 8162 points, becoming U20 world champion ahead of Maksim Andraloits and Estonia’s Johannes Erm.

At the 2022 World U20 Championships in Cali, Gabriel Emmanuel claimed the men’s decathlon gold with 7860 points, while Sweden’s Jacob Thelander finished second and Elliot Duvert took third.

Liam Belo Da Silva of Sweden won the men’s decathlon at the 2026 World Athletics U20 Championships with 8112 points, setting a new Swedish U20 record.

Andrei Krauchanka won the men’s decathlon at the 2004 IAAF World Junior Championships in Grosseto with a championship-leading 8126 points, ahead of Aleksei Sysoyev (8047) and Norman Müller (7942).

The men’s decathlon at the 2002 IAAF World Junior Championships in Kingston was won by Leonid Andreyev (Uzbekistan) with 7693 points, narrowly ahead of Nadir El Fassi (France) with 7677 and Mikko Halvari (Finland) with 7587.

At the 2024 World U20 Championships in Lima, Tomas Järvinen won the men’s decathlon with a championship-record 8425 points, ahead of Hubert Trościanka and Florian Vriezen.

Benjamin Jensen won the men’s decathlon at the 1994 World Junior Championships in Lisbon with 7676 points, becoming U20 world champion ahead of Klaus Isekenmeier and Glenn Lindqvist.

Kevin Mayer won the men’s decathlon at the 2010 IAAF World Junior Championships in Moncton with 7928 points, becoming U20 world champion ahead of Ilya Shkurenyov and Marcus Nilsson.

The 2021 U20 World Championships in Nairobi saw František Doubek of the Czech Republic win the men’s decathlon with 8169 points, ahead of Belgium’s Jente Hauttekeete and Spain’s José San Pastor.

Eric Kaiser won the decathlon at the 1990 World Junior Championships in Plovdiv with 7762 points, ahead of Jarkko Finni and David Bigham.

The men’s decathlon at the 2000 IAAF World Junior Championships in Santiago was won by Dennis Leyckes (Germany) with 7897 points, ahead of David Gomez Martinez (Spain) with 7772 and Andre Niklaus (Germany) with 7712.

Raul Duany Bueno won the men’s decathlon at the 1992 World Junior Championships in Seoul with 7403 points, securing the U20 world title ahead of Bernhard Floder and Remco van Veldhuizen.

Michael Kohnle won the decathlon at the 1988 World Junior Championships in Sudbury with 7729 points, ahead of Robert Zmelik and Eduard Hämäläinen.

Attila Zsivoczky won the men’s decathlon at the 1996 IAAF World Junior Championships in Sydney with 7582 points, defeating Great Britain’s Dean Macey (7480) and the Netherlands’ Chiel Warners (7368) in a closely contested U20 decathlon.

The 2018 U20 World Championships in Tampere saw Australia’s Ashley Moloney win the men’s decathlon with a championship record of 8190 points, ahead of Gary Haasbroek and Switzerland’s Simon Ehammer.

The U23 European Championships historical archive showcases all-time decathlon records and champions, highlighting Europe’s best young talents and standout performances throughout history.

André Niklaus won the men’s decathlon at the 2001 European Athletics U23 Championships in Amsterdam, scoring 8042 points to take gold for Germany. Finland’s Jaakko Ojaniemi finished second with 7907 points, while Italy’s William Frullani …

Andrin Huber won the men’s decathlon at the 2025 European Athletics U23 Championships in Bergen with a personal best of 8188 points, leading a high-quality competition that saw four athletes surpass the 8000-point barrier.