Chainstay length measures the distance from the bottom bracket to the rear axle, and it shapes how your gravel bike handles. Shorter stays (415–425mm) make the bike feel snappy and quick to respond—great for racing or spirited rides on mixed terrain. Longer stays (435mm and up) add stability and make the bike feel more planted, especially when loaded with gear for bikepacking.
The middle range of 425–435mm offers a versatile balance that works well for most riders who want one bike for everything from fast day rides to weekend adventures. A common mistake is assuming shorter is always better—longer chainstays dramatically improve stability with frame bags and gear. If you're planning to run a large frame bag for bikepacking, definitely check chainstay length before you buy, as longer stays provide the clearance you'll need.