Time trialling is a road cycling discipline which amounts to racing alone against the clock over a predetermined distance. The nature of time trialling, and the fact that competitors are usually spread out over the course of several hours, means that there are few drafting opportunities, so aerodynamics become crucial.

Consequently, riders will often use very specialized bicycles designed specifically for time trialling, with features such as carbon-fiber frames, deep-section wheels and handlebars that allow the rider to adopt a more aerodynamic position.

Rider Height (Feet )Rider Height (Centimetres)Bike SizeBike Size (cm)
4’10” – 5’0″148cm – 152cmXX-Small47cm – 48cm
5’0″ – 5’3″152cm – 160cmX-Small49cm – 50cm
5’3″ – 5’6″160cm – 168cmSmall51cm – 53cm
5’6″ – 5’9″168cm – 175cmMedium54cm – 55cm
5’9″ – 6’0″175cm – 183cmLarge56cm – 58cm
6’0″ – 6’3″183cm – 191cmX-Large58cm – 60cm
6’3″ – 6’6″191cm – 198cmXX-Large61cm – 63cm
Time Trial Bike Size Chart

The vast majority of time trial courses are on flat or rolling terrain, so bicycles used for time trialling tend to be built for efficiency rather than comfort.

Time trial bikes will usually have a steeper seat tube angle than road racing bikes, as this allows the rider to adopt a more aerodynamic position without compromising power transfer.

Many time trial bikes also have integrated handlebars and stem combinations that allow the rider to adopt an even more extreme aerodynamic position.

Time Trial Bike Size Chart

What is a time trial bike?

A time trial bike is a specialized bicycle designed for racing against the clock in individual or team time trials. Time trial bikes are often aerodynamically optimized to minimize air resistance, and may be equipped with disc wheels and other features to improve their efficiency.

While time trial bikes share many similarities with road racing bikes, they are typically built with steeper angles and shorter wheelbases to improve their aerodynamic properties. Time trial bikes are also typically outfitted with more aerodynamic handlebars, which allows riders to adopt a more streamlined position on the bicycle.

Time trial bikes represent a significant investment for serious competitors, as they can provide a significant advantage in races against the clock. If you’re looking to get serious about time trialing, investing in a purpose-built time trial bike is definitely worth considering.

Time trial bike geometry

When it comes to time trial bikes, geometry is key. A time trial bike needs to be aerodynamic, and that means having a tight, aggressive riding position. That’s why time trial bike geometry is designed to put the rider in an aerodynamic position.

Time trial bike geometry is all about creating a fast, efficient riding position. The bikes are designed to be ridden in a very aggressive, aerodynamic position. This means that the rider’s body is positioned in such a way that it cuts through the air more easily.

Time trial bike geometry plays a crucial role in creating a fast, efficient riding position. If you’re looking to shave seconds off your time trial personal best, paying attention to bike geometry is a good place to start.

Time trial bike frame material

A time trial bike is designed to be as aerodynamic as possible in order to help the rider go faster. The frame material is one of the most important aspects of the bike that affects its aerodynamics. There are three main materials that are used for time trial bike frames: carbon fiber, aluminum, and titanium.

Carbon fiber is the lightest and strongest of the three materials. It is also the most expensive. Carbon fiber frames are made by layering sheets of carbon fiber and bonding them together with resin. Aluminum is the most common material used for bike frames.

It is less expensive than carbon fiber but not as strong or light. Titanium is somewhere in between aluminum and carbon fiber in terms of price and weight. It is also very strong and has a smooth ride quality.

How to size a time trial bike

A time trial bike is a special type of road bike that is designed for racing against the clock. Time trial bikes are not legal in UCI road races, but they are commonly used in triathlons, time trials, and other competitions where speed is the primary concern.

There are a few things to keep in mind when sizing a time trial bike. First, you want to make sure that the frame size is appropriate for your height. Second, you want to ensure that the handlebars are at the correct width for your shoulders. Finally, you want to make sure that the seat is at the right height for your hips.

If you’re unsure about what size time trial bike to get, it’s best to consult with a professional before making your purchase. They will be able to help you find the perfect size bike for your body type and riding style.

The importance of fit

Bike fit is critical for time trial success. A properly fitted bike will help you be more comfortable and efficient on the bike, resulting in a faster ride. There are many factors to consider when getting a bike fit, including your saddle height, handlebar reach, and stem length. A professional bike fitter can help you find the perfect position on your time trial bike, so you can focus on pedaling hard and going fast.


The right bike size is crucial for having a comfortable and efficient ride. Use the time trial bike size chart to find the frame that’s best suited for your height and riding style. With a little trial and error, you’ll be on your way to finding the perfect bike for you.