Imagine hurtling down a narrow, twisting, hilly ice track on skates at speeds up to 50 miles per hour, then trying to go even faster so you can outpace the competitors at your elbow. This is downhill ice cross. Beginning back in 2001, Red Bull has been sponsoring races and a world tour under the name “Red Bull Crashed Ice,” building enormous ice tracks in historic city centers to challenge the racers who train for the sport. The tracks are made of steel scaffolding, topped by wood shaped to the desired curves, covered with flexible mats and a network of tubes filled with cooled fluid like glycol—then water is sprayed onto the whole track, slowly building up a four-inch layer of slick ice. Gathered here are ice cross images from recent years in cities in Europe and North America.

1. Maxwell Dunne and Cameron Naazs of the United States and Scott Croxall and Kyle Croxall of Canada perform during a training session at the first stage of the ATSX Ice Cross Downhill World Championship at the Red Bull Crashed Ice course in Saint Paul, Minnesota, on January 18, 2018.
Joerg Mitter / Red Bull via Getty
2. Skaters race down the twisting track during the "Red Bull Crashed Ice" Ice Cross Downhill World Championship in Saint Paul, Minnesota, on January 20, 2018.
Lionel Bonaventure / AFP / Getty
3. Myriam Trepainer and Jacqueline Legere of Canada race in the women's finals of the second stage of the Ice Cross Downhill World Championship on January 9, 2016, in Munich, Germany.
Joerg Mitter / Red Bull via Getty
4. A race takes place during the Ice Cross Downhill World Championship in Marseille, France, on January 14, 2017.
Anne-Christine Poujoulat / AFP / Getty
5. Dean Moriarity of Canada, Dan Witty of the United States, Janne-Petteri Mynttinen of Finland, and Sever Lundquist of the United States race in the final stage of the ATSX Ice Cross Downhill World Championship in Saint Paul, Minnesota, on February 27, 2016.
Red Bull via Getty
6. Skaters compete during the Ice Cross Downhill World Championship in Saint Paul, Minnesota, on January 20, 2018.
Lionel Bonaventure / AFP / Getty
7. Cameron Naasz of the United States, Scott Croxall of Canada, Tristan Dugerdil of France, and Tommy Mertz of the United States, during the finals at the eighth stage of the ATSX Ice Cross Downhill World Championship in Ottawa, Canada, on March 4, 2017.
Armin Walcher / Red Bull via Getty
8. An ice cross skater crests a hill in Marseille on January 14, 2017.
Boris Horvat / AFP / Getty
9. Paavo Klintrup of Finland, Michael Johansson of Sweden, Derrek Coccimiglio of Canada, and Denis Novozhilov of Russia compete in the 2015 Ice Cross Downhill World Championship at Stormont in Belfast, Northern Ireland, on February 21, 2015.
Sebastian Marko / Red Bull via Getty
10. Myriam Trepanier of Canada celebrates after she won the the first stage of the Ice Cross Downhill World Championship in Quebec City, Canada, on November 28, 2015.
Joerg Mitter / Red Bull via Getty
11. United States skater Cameron Naasz reacts after winning the Red Bull Crashed Ice Championship in Marseille on January 14, 2017.
Boris Horvat / AFP / Getty
12. Canadian Jaqueline Legere, Amanda Trunzo of the U.S., and Austrian Veronika Windish celebrate on the podium during the Ice Cross Downhill World Championship in Saint Paul on January 20, 2018.
Lionel Bonaventure / AFP / Getty
13. Ice cross skaters jump in to start a race in Saint Paul on January 20, 2018. The Cathedral of Saint Paul is seen in the background.
Lionel Bonaventure / AFP / Getty
14. Pacome Schmitt of France, Coleton Haywood of Canada, Paavo Klintrup of Finland, and Michael Urban of Czech Republic race in the first stage of the Ice Cross Downhill Championship in Quebec City, Canada, on November 28, 2015.
Joerg Mitter / Red Bull via Getty
15. A competitor flies through the air during the Ice Cross Downhill World Championship at the Stormont estate in Belfast on February 20, 2015.
Cathal McNaughton / Reuters
16. Fabien Mels (second from right) of Germany and Tyler Witty of the U.S. (right) catch some air during the Ice Cross Downhill Championship World Series in Belfast, Northern Ireland, on February 21, 2015.
Charles McQuillan / Getty
17. Competitors race in the Red Bull Crashed Ice competition in Quebec City on March 17, 2012.
Mathieu Belanger / Reuters
18. Winner Arttu Pihlainen of Finland, left, and third-place winner Kilian Braun of Switzerland, right, celebrate after the final of the Red Bull Crashed Ice competition in the former imperial estate of Kolomenskoye in Moscow, Russia, on February 26, 2011.
Mikhail Metzel / AP
19. The Crashed Ice course is set up in the historic section of Quebec City, including this 43-degree slope, on March 1, 2007.
Laetitia Deconinck / AP
20. A competitor jumps during a practice session of the Red Bull Crashed Ice competition in Quebec City, on January 23, 2009.
Mathieu Belanger / Reuters
21. Cameron Naasz of the United States, Antti Tolvanen of Finland, and Tristan Dugerdil and Pacome Schmitt of France race in the eighth stage of the ATSX Ice Cross Downhill World Championship in Ottawa, Canada, on March 4, 2017.
Joerg Mitter / Red Bull via Getty
22. A race begins at the Ice Cross Downhill World Championship in front of the Parliament Buildings in Ottawa, Ontario, Canada, on March 4, 2017.
Patrick Doyle / Reuters
23. Ice Cross skaters navigate a series of hills in Munich, Germany, on January 8, 2016.
Michaela Rehle / Reuters
24. Reed Whiting of the United States, Paavo Klintrup of Finland, Gabriel Andre of Canada, and Eli Krieter of the United States take a corner during the final stage of the ATSX Ice Cross Downhill World Championship in Saint Paul, Minnesota, on February 27, 2016.
Red Bull via Getty
25. Canadian skater Jacqueline Legere celebrates after winning the Red Bull Crashed Ice Championship in Marseille on January 14, 2017.
Boris Horvat / AFP / Getty
26. Joonas Evaekoski of Finland, Justin Docherty of Germany, and Aaron Loth of the United States race in the qualifiers at the third stage of the ATSX Ice Cross Downhill World Championship on January 19, 2018, in Saint Paul, Minnesota.
Joerg Mitter / Red Bull via Getty
27. Ice Cross skaters race down the track in Marseille on January 14, 2017.
Anne-Christine Poujoulat / AFP / Getty
28. Pacome Schmitt of France crashes during a training run on the second leg of the Red Bull Crashed Ice Championship on January 7, 2016, in Munich, Germany.
Joerg Mitter / Red Bull via Getty
29. Martin Barrau of France, Vaclav Kosnar of the Czech Republic, Nathan Radke of the United States, and Skyler Diamond-Burchuk of Canada compete in the Junior Cup during the third stage of the ATSX Ice Cross Downhill World Championship on February 3, 2017, in Saint Paul, Minnesota.
Sebastian Marko / Red Bull via Getty
30. Mirko Lahti of Finland, Joni Saarinen of Finland, Samuel Nadeau of Canada, and Petar Sevo of the Netherlands race in the final of the Juniors Championship at the fourth stage of the ATSX Ice Cross Downhill World Championship on March 3, 2017, in Ottawa, Canada.
Joerg Mitter / Red Bull via Getty
31. Racers make their way down the track on January 24, 2009, in Quebec City.
Mathieu Belanger / AP
32. Dean Moriarity of Canada, Dan Witty of the United States, Tj Aubrecht of the United States, and Alex Mercier of Canada attempt a corner during the final stage of the ATSX Ice Cross Downhill World Championship in Saint Paul, Minnesota, on February 27, 2016.
Red Bull via Getty
33. Notre-Dame de la Garde and Marseille's Old Port can be seen in the background as skaters compete on a track during the "Red Bull Crashed Ice" Ice Cross Downhill World Championship in Marseille on January 14, 2017.
Anne-Christine Poujoulat / AFP / Getty
34. Maxwell Dunne and Cameron Naazs of the United States and Scott Croxall and Kyle Croxall of Canada leap from the starting line during a training session during the first stage of the ATSX Ice Cross Downhill World Championship in Saint Paul, Minnesota, on January 18, 2018.
Mihai Stetcu / Red Bull via Getty