New triathletes and cyclists often wonder whether to buy a triathlon or road bike. Triathlon bikes are designed for the aero position, while road bikes are for arms at the sides. The frame geometry varies, with triathlon bikes having a shorter top bar and lower seat angle, and road bikes having a longer top bar and angled saddle. Triathlon bikes support the weight of the upper body and keep the back flexible, while road bikes prevent tension in the legs and allow for better breathing. Road bikes are better for hilly terrain and group racing, while triathlon bikes are better for multisport events.
One of the biggest questions new triathletes and cyclists are asking is whether to buy a triathlon bike or a standard road bike. To answer this question, one must first understand the differences between the two. In essence, a triathlon bike is designed to be more comfortable when ridden in the aero position using aero bars. This means that the weight of the body rests on the forearms, which are extended towards the center of the handlebars. A road bike, on the other hand, is designed to be ridden with your arms at your sides, supporting your body weight.
These differences between the two bikes can be attributed to subtle variations in frame geometry. A triathlon bike has a shorter top bar and a lower seat angle, which makes the rider feel like they are sitting slightly lower and further back. The front section of the frame is extended, which gives the rider room to stretch his upper body towards the aero bars. A road bike has a longer top bar and a more angled saddle, which gives the rider more room to move their legs freely. The shorter front section of a road bike allows the rider to support their body weight without having to lean on the handlebars.
The variations in frame design between the two help improve performance in different ways. The geometry of a triathlon bike helps support the weight of the upper body naturally, without consuming the rider’s strength. In addition, the extended back position attributed to the shape of the bike helps keep the back flexible and reduces cramps, which allows the rider to transition into racing more quickly. The increased legroom on a road bike prevents the thighs from getting too close to the chest or abdomen, allowing for better breathing. This greater distance also leads to less tension in the legs, which allows the rider to pedal faster and for a longer period.
While these differences may seem subtle to the novice rider, there are situations where one type of bike can vastly outperform the other. A road bike is typically much better on hilly terrain and also handles much better on sharp corners or turns. The flat-lying position on a triathlon bike conserves energy, but it also contributes to poor handling, making this bike a poor choice for group racing or draft situations. In conclusion, for those who plan to participate mainly in road races or group events, a road bike is a better choice. Those planning to participate in triathlons or other multisport events should stick with a triathlon bike.