---
title: radius
framework: corelocation
role: symbol
role_heading: Instance Property
path: corelocation/clregion/radius
---

# radius

The radius (measured in meters) that defines the region’s outer boundary.

## Declaration

```swift
var radius: CLLocationDistance { get }
```

## Discussion

Discussion In iOS, use a CLCircularRegion object to manage geographic regions.

## See Also

### Deprecated

- [init(circularRegionWithCenter:radius:identifier:)](corelocation/clregion/init(circularregionwithcenter:radius:identifier:).md)
- [contains(_:)](corelocation/clregion/contains(_:).md)
- [center](corelocation/clregion/center.md)