To pin a race number to a cycling jersey, lay the jersey flat, smooth the number across the area the race briefing specifies, and fix it with four safety pins, one in each corner, passing only through the outer layer of fabric. Done properly it sits flat, stays readable and does not tear the jersey. This guide covers the method, where to put the number and how to avoid the common mistakes.
Where does the race number go on a cycling jersey?
Follow the race briefing first: events set their own rules, and many road races want the number on the back, while some formats ask for a front number or one on the bike. Whatever the position, keep it clear of the pockets so you can still reach food and gels, and keep it flat enough to read from a distance. Check how the jersey is cut: a close race fit gives a smoother surface than a loose one.
How do you pin it without wrinkles?
Put the jersey on a flat surface or on someone wearing it in the riding position, because a number pinned while standing straight will pucker once you bend over the bars. Fix the top corners first, then the bottom ones, pulling lightly so the paper is neither slack nor tight. A slightly curved, relaxed number moves less in the wind than a taut one, and a flat one is easier for marshals and timing cameras to read.
How do you avoid damaging the jersey?
Pass the pin through the outer layer only, away from seams and stitching, and keep the pin points facing away from your skin. Lightweight fabric can snag, so choose small, sharp pins that make a clean hole rather than blunt ones that drag threads. Remove the pins carefully after the race, and wash the jersey as normal using the care label. If your jersey has a mesh or very light back panel, ask whether you can use the front for your number instead.
Should you pin before or after layering up?
The number must be on the outermost layer. If you ride in a vest or windbreaker over your jersey, pin the number to the outer garment or move it there once the temperature settles. Our first road race kit guide covers layering decisions, and the criterium guide and gran fondo guide do the same for those formats.
What about triathlon and pockets?
In triathlon the number usually goes on a race belt rather than the kit; see race numbers on a trisuit. If your jersey back pockets are in use, pin above them. For pocket planning, see cycling jersey pockets and the long ride kit checklist.
FAQ
How many pins do I need for a race number?
Four, one in each corner, is the standard. Carry a couple of spares in your race bag in case one is lost.
Can I pin a number to a thin jersey without tearing it?
Yes, if you use small sharp pins and pass them through the outer fabric away from seams. Avoid pinning through pockets.
Should the number be on the front or the back?
Follow the event rules. For most road races it is the back, but always read the briefing.
Get the jersey sorted before race day: see the DTR range at /collections/cycling-jerseys.
DTR — performance cycling and triathlon apparel, designed and developed in Ukraine.
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