Cycling (UCI) — Official Rules

Cycling is a racing sport in which competitors propel a bicycle by muscular force, governed worldwide by the Union Cycliste Internationale (UCI), founded in Paris on 14 April 1900. Unlike team-court sports, cycling has no periods, timeouts, halves or substitutions: a competition is a race against other riders and/or the clock. Results are decided either by finishing order (mass-start events), by elapsed time (time trials and stage General Classification), or by accumulated points (track endurance and BMX/MTB series). The UCI publishes its rules as numbered Parts (Part 1 General Organisation, Part 2 Road, Part 3 Track, Part 4 Mountain Bike, Part 5 Cyclo-cross, etc.), each amended on its own date.

A race is directed by a College of Commissaires, headed by the President of the Commissaires' Panel, supported by finish-line judges, the timekeepers / photo-finish operator, moto and vehicle commissaires following the race, the race director / organiser and, in major events, an anti-doping delegation. Commissaires rule on finishing order, relegations, sprint irregularities and the issuing of yellow cards, fines and time penalties under Part 12 (Discipline & Procedures).

The UCI governs eight disciplines: Road, Track, Mountain Bike (MTB), BMX Racing, BMX Freestyle, Cyclo-cross, Trials and Indoor Cycling (cycle-ball and artistic cycling). The UCI World Championships programme additionally recognises Gravel and Para-cycling. Each discipline has its own course type, race formats and equipment rules, but all share the common General Organisation rules (Part 1), the equipment standards (Part 1, Chapter III) and the disciplinary code (Part 12).

In a mass-start road race all riders set off together and the first rider to cross the finish line wins; subsequent placings follow the order of crossing. Elite men's championship and classic road races are typically held over 250–280 km (the 2026 Worlds elite men's road race is 273.7 km); elite women's races are commonly 140–180 km. Where times are equal, riders given the same time are placed by the order in which their front wheel crosses the line. National teams (not trade teams) contest the World Championships.

In an Individual Time Trial (ITT) riders start one at a time at fixed intervals and race alone against the clock; the fastest elapsed time wins. In a Team Time Trial (TTT) a squad rides together and the team's time is usually taken on a designated nth rider crossing the line. The 2026 Worlds elite time-trial course is 39.9 km. Drafting (sheltering behind another competitor or vehicle) is prohibited in an ITT.

A stage race (e.g. a Grand Tour) is run over consecutive days; the General Classification (GC) ranks each rider by the sum of their times across all stages, lowest cumulative time leading. The race leader wears the leader's jersey. Organisers may award time bonuses at stage finishes and intermediate sprints (typically 10 / 6 / 4 seconds for the first three) that are subtracted from GC time; secondary classifications include points (sprint) and King/Queen of the Mountains competitions.

Food and bottles may be taken only in designated feed zones or from team cars under controlled conditions. Prohibited and card-able behaviour includes the "sticky bottle" (holding a team-car handover too long to gain a tow), sheltering in the slipstream of a vehicle, and discarding bottles/litter outside permitted zones. Such acts may incur fines, time penalties or a yellow card (Article 9.1).

Track events are held on a banked, oval velodrome. The standard international / Olympic track is 250 m per lap; other homologated lengths exist (e.g. 200 m, 333.33 m). The riding surface (the côte d'azur boundary, sprinters' line and stayers' line) governs where overtaking and blocking are permitted. Track bicycles are fixed-gear with no brakes.

The Sprint is a head-to-head tactical race (best-of-three in finals) in which only the final 200 m is timed. The Keirin is a paced sprint: riders follow a motorised derny that pulls off with roughly 2.5 laps remaining, then sprint for the line. The Team Sprint is a short team time trial (men 3 laps / 3 riders, women 3 laps / 3 riders) where each lead rider peels off after one lap and the last rider's time counts.

In Pursuit events riders/teams start on opposite sides of the track and chase each other against the clock; catching the opponent ends the heat, otherwise the faster time wins. The Individual Pursuit is 4 km (men) and 3 km (women). The Team Pursuit is 4 km / 16 laps of a 250 m track for four riders, and the team's time is taken on the third rider crossing the line.

The Points Race is a mass-start endurance event (men 25 km, women 20 km) decided on accumulated points. There is an intermediate sprint every 10 laps awarding 5 / 3 / 2 / 1 points to the first four; the final sprint awards double points. A rider who gains a full lap on the bunch earns +20 points, and a rider who loses a lap is docked −20 points. Final ranking is by total points (lap standing breaks ties).

Scratch race: a simple mass-start race over a set distance (10 km men and women at the Worlds since the 2025 parity change); first across the line wins, with lapped riders placed behind those on the lead lap. Tempo race: an intermediate sprint every lap after an opening neutralised phase, awarding 1 point to each lap winner plus +20 for lapping the field. Elimination race ("devil"): the last rider across the line is eliminated at repeated sprints until one rider remains. Madison: a paired relay scored like the Points Race (5/3/2/1 per sprint, ±20 per lap), with team-mates handing off by a hand-sling.

The Omnium is a single-day multi-discipline competition of four endurance races held in order: Scratch race, Tempo race, Elimination race, and Points race. In the first three races the finishing order awards 40 points for 1st, 38 for 2nd, 36 for 3rd and so on, decreasing by 2 points per place. These totals carry into the concluding Points race, where points won (and ±20 lap swings) are added to the running total. The rider with the highest aggregate wins the Omnium.

Cross-Country Olympic (XCO) is a mass-start, multi-lap race on a technical off-road circuit; Elite races last about 80–90 minutes, with lap count set so the duration is met (laps typically 3.5–4.5 km). Downhill (DH) is an individual timed run down a steep technical course where the fastest single run wins. Other formats include short-track (XCC), marathon (XCM) and the team relay.

Cyclo-cross is an autumn/winter mass-start race on a closed circuit (typically 2.5–3.5 km) mixing grass, mud, sand and obstacles that force riders to dismount and carry the bike. The course must be at least 3 m wide throughout to allow overtaking. Elite races are run to a set time plus a final lap (men ~60 min, women ~50 min); the first across the line wins. Tyre width is limited (33 mm) and a double pit allows bike changes.

BMX Racing is a short, explosive gate-start sprint (about 30–40 seconds) over a sealed dirt track with jumps and bermed turns; up to eight riders race each heat (moto), and finishing position determines progression through rounds to a final where first across the line wins. BMX Freestyle (Park) is judged: each rider performs a timed run (e.g. 60 seconds) and a panel scores difficulty, execution, height, style and originality on a 0–100 scale; the highest score wins.

A racing bicycle is a human-powered vehicle with two wheels of equal diameter propelled solely by the legs in a circular movement, with no fairing to reduce air resistance. The minimum weight of the complete bicycle is 6.8 kg, a limit unchanged for 2026. The bicycle must be of a type commercially available to any purchaser. The proposed 54×11 gearing restriction remains paused for 2026 and is not in force.

From 1 January 2026 the UCI distinguishes two helmet categories. A mass-start ("traditional") helmet must have at least three visible inlet vents, must not cover the ears, and must not have a visor. Time-trial helmets (with no vent requirement, ear coverage and visors permitted) may be used only in ITT and TTT events on the road. A homologated helmet is mandatory for all riders in competition.

From 1 January 2026 for road bikes, the rim height of wheels in mass-start races is limited to a maximum of 65 mm (deeper and disc wheels remain permitted in ITT/TTT). A maximum internal fork-leg width of 115 mm (front) and maximum internal seat-stay width of 145 mm (rear triangle) apply along the whole length of the fork and rear triangle (track bikes follow from 1 January 2027).

From the start of 2026, road and cyclo-cross handlebars must be a minimum of 400 mm wide (measured outside-to-outside). The flare is limited to 65 mm from the inside edge of the tops to the outside edge of the drops, the gap between brake levers must be at least 280 mm at the narrowest point, and the inward tilt of the levers may not exceed 10 degrees. Time-trial extensions and rider position are governed separately under the saddle and handlebar reach limits.

The saddle support surface must be horizontal (the Clarification Guide effective 1 January 2026 details how horizontality is checked across road, track and cyclo-cross). Saddle length and the setback / reach of the rider's position relative to the bottom bracket are constrained to limit aerodynamic advantage. Commissaires perform equipment and position checks before and after key events; a non-conforming bike leads to exclusion or relegation.

The result of a race is fixed by the order in which riders cross the finish line (mass-start), the elapsed time (time trials/GC), or the points total (track endurance, BMX/MTB series). The finish is judged on the leading edge of the front tyre crossing the vertical plane of the line, decided where necessary by photo-finish. A rider must finish on the bicycle (or carrying it across the line if it has failed) to be classified.

In a mass-start road race, riders finishing in the same group are credited the same time; a measurable gap creates a new time bracket (the long-standing 3-second rule, widened to gaps where appropriate, separates groups). On flat bunch-sprint stages the GC time is generally taken at the front of the group for safety, with crash/mechanical exceptions inside the final kilometres. Order within a same-time group still follows the placing order across the line.

Since 2024 commissaires may issue a yellow card for behaviour liable to cause a safety risk or for unsporting conduct, including irregular sprinting (deviating from the line, head-butting, pushing), sticky bottles, taking food outside the feed zone, sheltering in a vehicle's slipstream, obstruction, and intimidation or assault of riders, staff or spectators. A yellow card may accompany fines, relegation or disqualification, and accumulates toward suspension under Article 8.2.

From 1 January 2025 the accumulation penalties are: two yellow cards in the same race → disqualification from that race and a 7-day suspension (from the day after the second card); three yellow cards within 30 days → 14-day suspension; and six yellow cards within one year → 30-day suspension. The card history is tracked centrally by the UCI across all events a rider contests.

Independently of the card system, commissaires may relegate a rider (move them to the back of their finishing group) or disqualify them for a dangerous sprint, leaving the racing line in the final metres, or causing a crash. In a bunch sprint a deviation that obstructs a rival typically draws relegation to last in the group plus a fine and, where unsafe, a yellow card or disqualification.

Effective for 2026 the UCI introduced minimum standards for finish-area barriers, which must be of a specified construction, securely connected and able to withstand the impact of a crash, with appropriate padding and gaps managed in the final kilometres. Organisers must signal hazards (the SafeR programme drives ongoing safety measures, including controlled run-in furniture and feed-zone placement).

A rider who crashes or suffers a mechanical inside the final 3 km of a flat road stage is generally credited the time of the group they were in (the 3-km rule), provided they finish. The race director may neutralise the race or stop it for safety (crashes, weather, blocked road); a neutralised race resumes with the gaps as they stood, or the result is taken at the last safe point. Outside assistance beyond permitted service can incur a penalty.

Cycling applies the World Anti-Doping Code and the UCI Anti-Doping Rules. Riders are subject to in- and out-of-competition testing, the biological passport and whereabouts obligations. From 1 January 2026, carbon monoxide (CO) rebreathing as a performance-enhancing method is added to the WADA Prohibited List; medical CO diagnostic use is regulated. Sanctions for anti-doping rule violations range from warnings to multi-year ineligibility.

Riders compete by age category (Junior, Under-23, Elite) and hold a valid UCI licence through their National Federation. Men's road teams are ranked WorldTeam, ProTeam and Continental. For 2026, the top three ProTeams by the previous season's ranking receive automatic invitations to all UCI WorldTour stage races (including the Grand Tours), with the remaining wildcard slots allocated by organisers. World Championships are contested by national teams.