# LineGradient A line that displays with a gradient along the length of the line. ``` class LineGradient ``` ## Overview Use [`LineGradient`](/documentation/MapKitJS/LineGradient) with a [`PolylineOverlay`](/documentation/MapKitJS/PolylineOverlay) to show a gradient along a route or path. You can also use it to provide additional information about locations along the path, for example, the running pace along a route. ## Topics ### Creating a Line Gradient [`constructor(colorStops?: Record);`](/documentation/MapKitJS/LineGradient/LineGradientConstructor) Creates a style that renders a gradient along the length of a line. [`addColorStop(offset: number, color: string): void;`](/documentation/MapKitJS/LineGradient/addColorStop) Adds a color transition point to the gradient. [`addColorStopAtIndex(index: number, color: string): void;`](/documentation/MapKitJS/LineGradient/addColorStopAtIndex) Adds a color transition at the index point in the list of points within a polyline. ### Instance Methods [`toString(): string;`](/documentation/MapKitJS/LineGradient/toString) Returns a string representation of the line gradient object. --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)