Mountain bike rules rules, for watching
Start with the rules you see all the time, then the ones that change results.
Settling an argument? Search all 15 rules
- What are the different kinds of mountain bike race?
- How does an Olympic cross-country mountain bike race work?
- How is the start order decided in a mountain bike race, and how is the race started?
- What is a cross-country course like, and what happens if a rider leaves it?
- Where can a mountain biker take a bottle or get a puncture fixed during a race?
- Why are some riders pulled out of a cross-country race before the finish?
- What equipment rules apply to a mountain bike in a race?
- What is short track mountain biking?
- How does a cross-country eliminator race work?
- What are the rules for mountain bike marathons and multi-day stage races?
- How does a downhill mountain bike race work?
- What do the flags mean in downhill, and when does a rider get a re-run?
- What must a downhill rider wear?
- What is four cross, and what do the coloured cards mean?
- How do enduro and pump track races work?
Where these rules come from
| Tag | Document |
|---|---|
| UCI plus article number | Union Cycliste Internationale, Cycling Regulations, Part 4: Mountain Bike Races, Japan Cycling Federation edition 2025, with the amendments applying on 1 January 2026. Read for this set: chapter I (general rules), chapter II (cross-country), chapter III (downhill), chapter IV (four cross), chapter V (enduro), chapter VI (pump track, to article 4.6.010), chapter VIII (e-mountain bike, opening articles) and articles 4.10.004 to 4.10.008 of chapter X (cross-country World Cup) |
| R | "Why the rule exists", or a point reasoned from the rule, not stated in it |
| C | Common usage or general knowledge, not a rule |
All checked on 14 October 2026. The English lines were read; the Japanese lines were filtered out.
Not covered: the World Cup chapters (IX to XV) apart from the articles named above, so the World Cup start grid, its rounds and its "protected rider" rules are not on these pages; the ranking, masters and team chapters (XVI to XVIII); chapter VII (snow bike); the annexes, including the eliminator and four cross pairing tables; the diagrams of course signs and B lines, which the text copy does not carry; the Olympic qualification system; Part 1 of the UCI regulations (the general bicycle and helmet rules) and Part 12 (discipline).
Not covered: the World Cup chapters (IX to XV) apart from the articles named above, so the World Cup start grid, its rounds and its "protected rider" rules are not on these pages; the ranking, masters and team chapters (XVI to XVIII); chapter VII (snow bike); the annexes, including the eliminator and four cross pairing tables; the diagrams of course signs and B lines, which the text copy does not carry; the Olympic qualification system; Part 1 of the UCI regulations (the general bicycle and helmet rules) and Part 12 (discipline).