| Austria (Boys Block A | Startlane: 24 | Next lanes: 28, 32) |
| Athlete 1: Kai-Jürgen Eder Jun. |
| Athlete 2: Gregory Gabrielian |
| Athlete 3: Dominic Groß |
| Athlete 4: Fabian Groß |
| Coach: Ivonne Groß |
| Belgium (Boys Block A | Startlane: 29 | Next lanes: 25, 21) |
| Athlete 1: Tuur Vercauteren |
| Athlete 2: William Dillen |
| Athlete 3: Wout Wouters |
| Athlete 4: Gabin Roman |
| Coach: Véronique Perniaux |
| Croatia (Boys Block A | Startlane: 19 | Next lanes: 15, 11) |
| Athlete 1: Ian Jambrović |
| Athlete 2: Jakov Kovačević |
| Athlete 3: Vedran Barunčić |
| Athlete 4: Marko Kovačević |
| Coach: Igor Habljak |
| Czech Republic (Boys Block A | Startlane: 18 | Next lanes: 22, 26) |
| Athlete 1: Jaroslav Zapletal |
| Athlete 2: Jakub Sedláček |
| Athlete 3: David Mojka |
| Athlete 4: Ondrej Prekop |
| Coach: Ivan Burian |
| Denmark (Boys Block A | Startlane: 15 | Next lanes: 11, 33) |
| Athlete 1: Magnus Rehnquist |
| Athlete 2: David Günther |
| Athlete 3: Tobias Kastfelt Bryde |
| Athlete 4: Benjamin Kjærsgaard Kristensen |
| Coach: Kasper Astrup Johansen |
| England (Boys Block A | Startlane: 11 | Next lanes: 33, 29) |
| Athlete 1: Louie Dawson |
| Athlete 2: Frank Stephenson |
| Athlete 3: Charlie Upton |
| Athlete 4: Kallum Peach |
| Coach: Tristan Hinchliffe |
| Estonia (Boys Block A | Startlane: 9 | Next lanes: 31, 27) |
| Athlete 1: Kermo Porovardja |
| Athlete 3: Robin Miklas |
| Athlete 4: Karl Martin Veiderpass |
| Coach: Priit Alep |
| Finland (Boys Block A | Startlane: 34 | Next lanes: 12, 16) |
| Athlete 1: Jussi Laine |
| Athlete 2: Antonio Valtonen |
| Athlete 3: Nooa Vilokkinen |
| Athlete 4: Markus Lahti |
| Coach: Juha Immonen |
| France (Boys Block A | Startlane: 22 | Next lanes: 26, 30) |
| Athlete 1: Thomas Laymet Carre |
| Athlete 2: Raphael Durivault |
| Athlete 3: Timeo Dujardin |
| Athlete 4: Alexandre Pedejouan |
| Coach: Patrice Serradeil |
| Germany (Boys Block A | Startlane: 17 | Next lanes: 13, 9) |
| Athlete 1: Max Lorenz |
| Athlete 2: Robin Reincke |
| Athlete 3: Shane Wanzke |
| Athlete 4: Phil Baumeister |
| Coach: Tobias Gäbler |
| Iceland (Boys Block A | Startlane: 23 | Next lanes: 19, 15) |
| Athlete 1: Matthías Leó Sigurðsson |
| Athlete 2: Ásgeir Karl Gústafsson |
| Athlete 3: Tristan Máni Nínuson |
| Athlete 4: Mikael Aron Vilhelmsson |
| Coach: Mark Heathorn |
| Italy (Boys Block A | Startlane: 10 | Next lanes: 14, 18) |
| Athlete 1: Gabriele Caiti |
| Athlete 2: Marco Rosellini |
| Athlete 3: Christian Forte |
| Athlete 4: David Giantomassi |
| Coach: Claudio Valentini |
| Malta (Boys Block A | Startlane: 26 | Next lanes: 30, 34) |
| Athlete 1: Nicolai Mallia |
| Athlete 2: Julian Baldacchino |
| Athlete 3: Chris Fenech |
| Athlete 4: Kayden Lagana |
| Coach: Mark Spiteri |
| Netherlands (Boys Block A | Startlane: 31 | Next lanes: 27, 23) |
| Athlete 1: Radin Alizade |
| Athlete 2: Milan Kunst |
| Athlete 3: Lucas Dollevoet |
| Athlete 4: Floris Dollevoet |
| Coach: Jord Van Weeren |
| Norway (Boys Block A | Startlane: 20 | Next lanes: 24, 28) |
| Athlete 1: Christian Danielsen Otting |
| Athlete 2: Tian Solum Vallestad |
| Athlete 3: Magnus Haram Mittet |
| Athlete 4: Mathias Danielsen Otting |
| Coach: Joakim Biehl |
| Poland (Boys Block A | Startlane: 27 | Next lanes: 23, 19) |
| Athlete 1: Tymon Zboralski |
| Athlete 2: Daniel Krajewski |
| Athlete 3: Patryk Dudziński |
| Athlete 4: Patryk Antosiak |
| Coach: Iga Ryngwelska |
| Romania (Boys Block A | Startlane: 25 | Next lanes: 21, 17) |
| Athlete 1: Adrian Balos |
| Athlete 2: Mate Balazs-Becsi |
| Athlete 3: Radu-Gabriel Tufan |
| Athlete 4: Mihai-Alin Dragnia |
| Coach: Marius Piticariu |
| Scotland (Boys Block A | Startlane: 13 | Next lanes: 9, 31) |
| Athlete 1: Aaron Claxton |
| Athlete 2: Thomas Carver |
| Athlete 3: Kevin Shaw |
| Athlete 4: Ben Wallace |
| Coach: Julia Claxton |
| Slovakia (Boys Block A | Startlane: 28 | Next lanes: 32, 10) |
| Athlete 1: Filip Juhas |
| Athlete 2: Lukas Spacek |
| Athlete 3: Matus Hrusovsky |
| Athlete 4: David Barak |
| Coach: Costas Mitsingas |
| Sweden (Boys Block A | Startlane: 21 | Next lanes: 17, 13) |
| Athlete 1: Albin Gullstrand |
| Athlete 2: Robin Noberg |
| Athlete 3: Emil Svensson |
| Athlete 4: Carl Eklund |
| Coach: Robin Skans |
| Switzerland (Boys Block A | Startlane: 32 | Next lanes: 10, 14) |
| Athlete 1: Alessandro Ambauen |
| Athlete 2: Leandro Keel |
| Athlete 3: Luca Zen |
| Athlete 4: Tobias Klingler |
| Coach: Dario Ancarani |
| Turkey (Boys Block A | Startlane: 30 | Next lanes: 34, 12) |
| Athlete 1: Ömer Faruk Kul |
| Athlete 2: Muhammed Yasir Kul |
| Athlete 3: Cemal Batu Pinar |
| Athlete 4: Tuna Böncü |
| Coach: Ümit Yıldırım |