Triathlon & Time Trial Bikes

Triathlon bikes are designed with a forward-leaning geometry that shifts load off the legs to preserve energy for the run leg of a race. Time trial bikes prioritise pure power transfer and aerodynamics for cycling-only events, and may follow UCI regulations that restrict certain design features. While they look similar, the intended use case affects geometry, fit, and component choices, so it is worth clarifying which discipline you are racing before buying.

These bikes are purpose-built for race conditions and are not well suited to general commuting or casual riding. The aggressive, aerodynamic position can be uncomfortable over long training rides if you are not accustomed to it. Most riders in this category use a separate road or training bike for day-to-day riding and reserve their triathlon or time trial bike for race day or specific race-simulation sessions.

Fit is one of the most critical factors when choosing a race bike, as the aggressive geometry leaves less room for adjustment compared to a standard road bike. It is strongly recommended to get a professional bike fit before purchasing, or at minimum to know your saddle height, reach, and stack measurements. Many bikes in this category offer adjustable stem and aerobar positions to help dial in your fit once the frame size is selected.

A beginner triathlete should prioritise a comfortable and adjustable riding position over outright aerodynamic performance. Entry-level triathlon bikes offer a more forgiving geometry and are easier to ride for longer distances while still providing meaningful aero advantages over a standard road bike. Starting with a mid-range build allows you to upgrade components over time as your racing experience and fitness develop.

Aerodynamics is the primary design focus of these bikes, with frame tube shapes, integrated cockpits, and component placement all engineered to reduce wind resistance. At race speeds, even small aerodynamic gains can translate into meaningful time savings over a 40km or longer course. However, the most aerodynamic position is only effective if you can hold it comfortably, so fit and flexibility should be considered alongside frame aero performance.

Finding the right bike size can feel tricky, as different bike types have slightly different geometries. To make it easier, we’ve created a Find Your Size tool. Simply enter your height and inseam measurements (or those of the person you’re shopping for), and we’ll recommend the best size for each bike and pre-select the recommended option for you.

Not sure of your inseam measurement? No worries! We provide an estimated inseam measurement based on your height to help keep your recommendation as accurate as possible.

You can find the tool on each product page or at the top of categories when browsing. Try Find Your Size.