The junior men's downhill is an event at the annual UCI Mountain Bike & Trials World Championships. It is restricted to competitors who are under 19 years of age at the end of the calendar year. It has been held since the inaugural championships in 1990.
| Rank | Nation | Gold | Silver | Bronze | Total |
|---|---|---|---|---|---|
| 1 |  France | 10 | 6 | 11 | 27 |
| 2 |  Australia | 8 | 4 | 6 | 18 |
| 3 |  Great Britain | 6 | 10 | 4 | 20 |
| 4 |  United States | 2 | 4 | 1 | 7 |
| 5 |  Canada | 2 | 2 | 1 | 5 |
| 6 |  New Zealand | 2 | 1 | 4 | 7 |
| 7 |  Germany | 1 | 2 | 1 | 4 |
| 8 |  Italy | 1 | 0 | 2 | 3 |
| 9 |  Ireland | 1 | 0 | 1 | 2 |
| 10 |  Switzerland | 1 | 0 | 0 | 1 |
| 11 |  Spain | 0 | 3 | 1 | 4 |
| 12 |  Belgium | 0 | 1 | 1 | 2 |
| 13 |  Austria | 0 | 1 | 0 | 1 |
| 14 |  Sweden | 0 | 0 | 1 | 1 |
| Totals (14 entries) | 34 | 34 | 34 | 102 | |
The UCI Mountain Bike World Championships are the world championship events for mountain bike racing in the disciplines of cross country, downhill, and four-cross. They are organized by the Union Cycliste Internationale (UCI), the governing body of world cycling.
Joshua Antonio Torres Bryceland, known as Josh Bryceland, and commonly referred to by his nickname, Ratboy, born 23 March 1990, in Manchester is a professional downhill mountain biker, who lives in Higher Poynton, Cheshire, England.
The 2011 UCI Mountain Bike & Trials World Championships was the 22nd edition of the UCI Mountain Bike & Trials World Championships and was held in Champéry, Switzerland.
The 2010 UCI Mountain Bike & Trials World Championships was the 21st edition of the UCI Mountain Bike & Trials World Championships and was held in Mont-Sainte-Anne, Quebec, Canada from 1 to 5 September 2010.
The 2009 UCI Mountain Bike & Trials World Championships were held in Canberra, Australia from 1 to 6 September 2009. The disciplines included were cross-country, downhill, four-cross, and trials. The event was the 20th edition of the UCI Mountain Bike World Championships and the 24th edition of the UCI Trials World Championships.
The 1999 UCI Mountain Bike World Championships were the 10th edition of the UCI Mountain Bike World Championships and were held in Åre in the North of Sweden. The events included were cross-country and downhill.
The 2008 UCI Mountain Bike & Trials World Championships were held in Val di Sole, Italy from 17 to 22 June 2008. The disciplines included were cross-country, downhill, four-cross, and trials. The event was the 19th edition of the UCI Mountain Bike World Championships and the 23rd edition of the UCI Trials World Championships.
The 2006 UCI Mountain Bike & Trials World Championships were held in Rotorua, New Zealand from 22 to 27 August 2006. The disciplines included were cross-country, downhill, four-cross, and trials. The event was the 17th edition of the UCI Mountain Bike World Championships and the 21st edition of the UCI Trials World Championships.
The 2004 UCI Mountain Bike & Trials World Championships were held in Les Gets, a ski station in the French Alps, from 8 to 12 September 2004. The disciplines included were cross-country, downhill, four-cross, and trials. The event was the 15th edition of the UCI Mountain Bike World Championships and the 19th edition of the UCI Trials World Championships.
The 1990 UCI Mountain Bike World Championships were held in Durango, Colorado, United States. These were the first World Championships in mountain biking to be organised by the Union Cycliste Internationale (UCI). The disciplines included were cross-country and downhill.
The 1995 UCI Mountain Bike World Championships were held in Kirchzarten, Germany from 18 to 19 September 1995. These were the sixth annual UCI world championships in mountain biking and the first to be held in Germany.
The 2003 UCI Mountain Bike & Trials World Championships were held in Lugano, Switzerland from 31 August to 7 September 2003. The disciplines included were cross-country, cross-country marathon, downhill, four-cross, and trials. The event was the 14th edition of the UCI Mountain Bike World Championships and the 18th edition of the UCI Trials World Championships.
The 2002 UCI Mountain Bike & Trials World Championships were held in Kaprun, Austria from 24 August to 1 September 2002. The disciplines included were cross-country, downhill, four-cross, and trials. This was the first UCI world championship in which four-cross was included, replacing the dual that had been run at the previous two championships.
The junior women's downhill is an event at the annual UCI Mountain Bike World Championships. It is restricted to competitors who are under 19 years of age at the end of the calendar year. It has been held since the second world championships in the 1991 UCI Mountain Bike World Championships
The 2017 UCI Mountain Bike World Championships was the 28th edition of the UCI Mountain Bike World Championships. As in 2016, the championships in the various disciplines were held at separate events. The world championships in four-cross were held at Val di Sole, Italy, on 24 and 25 August 2017, alongside UCI World Cup events in cross-country and downhill. The world championships in cross-country and downhill were held in Cairns, Australia, from 5 to 10 September 2017.
The 2018 UCI Mountain Bike World Championships was the 29th edition of the UCI Mountain Bike World Championships. It was held from 5 to 9 September 2018 in Lenzerheide, Switzerland. The four-cross competitions were held in Val di Sole, Italy from 5 to 6 July 2018
The 2020 UCI Mountain Bike World Championships was held in Leogang, Austria, from 5–11 October 2020. This was the 31st edition of the most prestigious mountain bike event on the calendar, held annually since 1990.
The 2021 UCI Mountain Bike World Championships were held from 25 to 29 August 2021 in Val di Sole, Italy.
The 2022 UCI Mountain Bike World Championships were held in the French commune Les Gets from 24 to 28 August 2022.