Part 4 of the Union Cycliste Internationale Regulations — Mountain Bike, in force from 1 January 2026.
| In force | 1 January 2026 |
| Structure | Part 4 of the seventeen parts of the UCI Regulations — 372 articles |
| Status | Current edition — supersedes the edition of 10 June 2021 |
What Part 4 governs
The Union Cycliste Internationale (UCI) Regulations are divided into seventeen numbered parts, which sit alongside the Constitution and the Code of Ethics. Each article carries its own three-part number — such as 4.11.010 — the first figure of which is the number of the part itself. This document is Part 4 of that set.
Mountain bike in all its disciplines: cross-country (XCO), downhill (DHI), enduro (EDR) and marathon (XCM) — covering the calendar, age categories, the World Cup, rankings and teams.
Key changes in this editionChanges from the edition of 10 June 2021
- Lifetime personal numberNew article 4.1.049: a rider who wins an elite World Cup race (XCO, DHI or EDR) is required to select a personal number between 2 and 999 for the Mountain Bike World Cup.
- Recognition of pregnancyNew articles 4.10.012 and 4.11.022: if a rider takes part in fewer than three rounds of the World Cup in a season by reason of pregnancy, the national federation and the team may ask the UCI to recognise the pregnancy — a mechanism parallel to the one that exists for injury (article 4.11.021).
- Complete rewriting of downhill competitionArticles 4.11.010 to 4.11.020 redefine the structure of downhill: at least one qualifying round and one final; qualification of the top 20 junior men and the top 10 junior women from the qualifying round; start intervals of at least 30 seconds in the qualifying round and one minute in the final, rising to two minutes for the last 10 riders; and a final start order based on the reverse of the qualifying-round results.
- Compulsory attendance at ceremoniesThe official ceremony is held immediately after each race, and a rider who arrives more than 5 minutes after the end of their own race is fined.
- Marathon World CupArticles 4.12.006 to 4.12.010 govern the Marathon World Cup: the top 20 riders in each round and the top 80 riders in the individual XCM ranking obtain places for the Marathon World Championships.
- Volume of change91 new articles and 61 deleted articles — the most extensive rewriting among the discipline parts.
Who this document matters to
The mechanism for recognising pregnancy is a new and significant point from the perspective of female athletes' rights: previously only injury held such a status. For teams and federations, the deadline for submitting the request to the UCI is a condition of using this mechanism.