<!--
{
  "availability" : [
    "iOS: 27.0.0 -",
    "iPadOS: 27.0.0 -",
    "macCatalyst: -",
    "watchOS: 27.0.0 -"
  ],
  "documentType" : "symbol",
  "framework" : "HealthKit",
  "identifier" : "/documentation/HealthKit/HKLiveWorkoutZoneUpdate/currentZoneDuration",
  "metadataVersion" : "0.1.0",
  "role" : "Instance Property",
  "symbol" : {
    "kind" : "Instance Property",
    "modules" : [
      "HealthKit"
    ],
    "preciseIdentifier" : "s:So23HKLiveWorkoutZoneUpdateC9HealthKitE07currentC8DurationAC09HKWorkoutcH0VSgvp"
  },
  "title" : "currentZoneDuration"
}
-->

# currentZoneDuration

A property that contains the zone duration just entered.

```
@nonobjc final var currentZoneDuration: HKWorkoutZoneDuration? { get }
```

## Discussion

When this property is `nil`, no zone is currently active.

---

Copyright &copy; 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)