Rennräder, or racing bicycles, are designed for speed and efficiency on paved roads. They typically feature a lightweight frame, narrow tires, and a streamlined design to reduce air resistance. These bikes often have multiple gears to help riders tackle various terrains and inclines. Rennräder are popular among competitive cyclists and recreational riders alike. They are commonly used in events such as road races and triathlons. The geometry of a Rennrad allows for a more aggressive riding position, which can enhance performance during long-distance rides.