---
title: polyline
framework: mapkit
role: symbol
role_heading: Instance Property
path: mapkit/mkroute/step/polyline
---

# polyline

The detailed step geometry.

## Declaration

```swift
var polyline: MKPolyline { get }
```

## Discussion

Discussion The polyline object in this property contains the geometry for this step. You can use the polyline object as an overlay in a map view.