BMX Rules: Motos, Gates, Classes and Freestyle Judging

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A six-year-old in a borrowed helmet sits on the gate for her first moto, rear wheel steady, eyes on the lights. Her mom isn’t allowed on the gate anymore; at six, she’s on her own. A few minutes later, a 40-year-old in the 41–45 Novice class lines up in the same lane. BMX racing runs on a clear set of rules that every rider and parent at the track learns quickly: how motos work, what happens at the gate, which class you race, and what you have to wear. Freestyle has its own rules too, mostly about how judges score a run.

This page explains the BMX rules in plain words, based on the USA BMX rulebook (used at more than 300 tracks in the US, Canada and Curaçao) and the UCI regulations for international racing, plus how freestyle is judged. Tracks can adjust rules locally, but only to make an event safer, so always listen to the announcements on race day. Back to the BMX guide.

BMX racing basics

• The track: a closed dirt loop with a starting hill, jumps, rollers and banked turns. UCI tracks measure 300–450 meters; a race usually takes under 40 seconds.
• The gate: sanctioned tracks should have a gate wide enough for eight riders; races have up to eight.
• The officials: a track operator, a head official (whose decisions on track disputes are final), a stager who calls riders to their motos, a starter, and scorers at the finish line.
• Membership: every rider on a USA BMX track needs a membership, even for practice. A one-day trial lets new riders try a practice or a single-point race.

Motos and mains: how a race day works

Riders race in motos, short qualifying heats listed on the day’s moto sheet (it’s the rider’s job to check the sheet and be in the right class). USA BMX tracks choose one of three systems:

• Transfer: riders race two or three rounds of motos; finishing high enough in a moto “transfers” you to the next round (a semi or the main event), and you don’t race the remaining motos.
• Transfer LST (Lane Selection Transfer): the same idea, but your qualifying finish decides your pick of gate lanes in the next round.
• Total Points: for classes of 3 to 8 riders. Everyone races three motos: 1 point for 1st, 2 for 2nd, 3 for 3rd and so on. Lowest total wins; a tie goes to the better finish in the third moto. Classes of 9 or more switch to Transfer.

Three or more riders make a legal class. At UCI races, motos are run in three rounds in heats of at most eight riders, and the riders’ total over the three rounds decides who moves on to the knockout rounds and the final.

At the gate and on the track

• Staging: when your name is called, you have one minute to get to staging; the starter doesn’t hold the gate for missing riders. Take the lane you’re assigned.
• Wheel on the gate: your front wheel must be against the gate when the starter begins the cadence. Breaking the plane of the gate before it drops is a “gate jump,” and you may be disqualified from that moto.
• Problem at the gate? The only way to put a race on hold is to put your front wheel over the gate before the cadence starts.
• The first 30 feet: intentionally blocking another rider in the first 30 feet after the gate can mean disqualification. Moving over isn’t a foul by itself; moving over to block is.
• Restarts: if three riders fall before the crest of the first jump, the race restarts. A race isn’t rerun because a rider wasn’t ready or because of poor track conditions.
• Racing lines: the leading rider may take any line, but malicious contact or forcing someone off the track can mean disqualification. Leave the track and you must come back where it’s safe, without gaining places or skipping obstacles.
• Finishing: you must finish on the bike you started on, and you can push or pull it across the line as long as you’re touching it. At UCI races, losing your helmet during a heat counts as not finishing.
• Protests go to the head official within 10 motos of the race in question.

Classes: age, skill, gender and wheel size

USA BMX riders race by age and proficiency on race day. Single-year age groups run from “5 & Under” through 16, then 17–20, 21–25 and older groups up to 56 & Over.

Class	Who races it	How you move up
Novice	New racers, boys and girls (new female members can choose Novice)	10 class wins or three title wins → Intermediate
Intermediate	Riders with some wins	Boys: 20 class wins or five title wins → Expert. Girls: 10 class wins or five title wins → Girls Expert
Expert / Girls Expert	The fastest amateurs, by age group (women’s groups up to 51 & Over)	Pro classes: riders born in 2007 or earlier (2026 rules)
Cruiser	Any skill level on 24-inch wheels, from 7 & Under to 66 & Over	Wins don’t count toward advancing
Balance Bike	Riders 5 and under on push bikes; open, no points	Moves to pedal classes

To count toward moving up, a win has to beat at least two riders of the same skill level or higher in your age group (or older, for riders 16 and under). Deliberately avoiding wins to stay in an easier class (“sandbagging”) gets you disqualified. Returning riders keep the skill level they left with. Internationally, UCI racing has Championship categories (Juniors aged 17–18, Under 23 and Elite aged 19 and over), Challenge categories for amateurs and Masters for riders 30 and over.

Bike rules

• Wheel size: in Intermediate, Expert, Girls Expert and Pro classes, wheels (with inflated tires) must be 22.5 inches (57 cm) or less across, the “20-inch” class. Cruiser wheels must be bigger than that, to fit 24-inch tires. Novices can ride either.
• Pedals: riders 12 and under, and Novices of any age, must use flat pedals. Clipless or magnetic pedals are only for riders over 12 who are Intermediate or higher.
• Safety: a working hand or coaster brake; handlebars no wider than 30 inches with grips covering the bar ends; no kickstands, chain guards, reflector brackets or freestyle pegs; no broken welds or sharp edges; axle ends cut to within ¼ inch of the nut. Pads on the top tube, stem and crossbar are recommended.

What riders must wear

Item	USA BMX tracks	UCI international racing
Helmet	Required, with a permanent strap (no snaps), good padding; full-face “highly recommended”	Full-face with a visor at least 10 cm long; open-face not allowed; strap fastened whenever on the track
Shirt	Long sleeves recommended; short sleeves need elbow protection	Long-sleeved jersey to the wrists
Pants	Long pants recommended; tear-resistant shorts need knee/shin pads	Long pants, or tear-resistant shorts with pads covering the whole knee and shin
Gloves	Not required in the rulebook	Full-finger gloves required
Shoes	Enclosed shoes covering all toes	Not covered in this section of the rules

The UCI also strongly recommends rigid back, elbow, knee and shoulder protection and neck protection. Helmet standards (ASTM F2032 for BMX, ASTM F1952 for downhill) are explained on our BMX gear page.

Prices change often. The prices below are what we saw on Amazon in October 2026; check the current price before you buy.

A rules-ready kit: the Bell Sanction 2 full-face helmet with a fixed visor, CPSC-compliant with ASTM downhill and BMX certifications per the maker (about $140), Fox Racing Dirtpaw full-finger gloves (about $40) and a flat-soled shoe like the Vans Old Skool (about $60) for flat pedals.

How BMX freestyle is judged

Freestyle has no gate and no finish line. In park contests at the Olympics, each rider gets 60-second runs, and five judges score each run from 0.00 to 99.99; the scores are averaged. In qualifying, both runs are averaged; in the final, only the better run counts. The UCI says judges look at difficulty, execution, style, originality, flow, height and amplitude, and there are no imposed tricks. Flatland riders perform routines of linked spins, balances and transitions on a flat surface, judged on difficulty, originality, control, flow, style and variety; riders must be at least 15 for UCI international flatland events. X Games formats vary by event and include best-trick contests.

Park and track etiquette

• Ride only when you’re allowed: USA BMX tracks are for members registered for that day’s practice or race.
• Take turns at the skatepark and on jumps; look before you drop in, and don’t stop or sit on landings.
• Share with skaters and scooters, and follow the park’s posted rules: some parks set bike-only sessions or limit bikes and pegs.
• Respect officials and other racers. USA BMX bans betting at races and drugs not prescribed by a doctor, and the head official’s word on the track is final.

Skaters share the same parks; our skateboarding rules page covers park etiquette from their side. For safety gear and crash care, see BMX injuries; for the bodies that write these rules, our BMX leagues and associations; and for kids’ rules, youth BMX.

BMX rules FAQs

What is a moto in BMX?

A moto is a qualifying heat of up to eight riders. Riders race two or three motos; depending on the track’s system, the top finishers transfer to the main event, or points from three motos decide the final order.

What is a gate jump?

Moving your front wheel past the gate before it drops. Your wheel must be against the gate when the starter’s cadence begins, and a gate jump can get you disqualified from that moto or main.

How do you move up from Novice in BMX?

Under the USA BMX rulebook, a Novice moves up to Intermediate after 10 class wins or three title wins at big events. Each win only counts if you beat at least two riders of your skill level or higher in your age group. You can also choose to move up early.

Can you use clipless pedals in BMX?

Only if you’re over 12 and race Intermediate or higher at USA BMX. Riders 12 and under and all Novices must use flat pedals.

What is a cruiser class?

A class for bikes with 24-inch wheels (more than 22.5 inches across with tires). Cruiser classes run by age from 7 & Under to 66 & Over, and cruiser wins don’t count toward moving up in skill level.