---
title: HKWorkoutSortIdentifierDuration
framework: healthkit
role: symbol
role_heading: Global Variable
path: healthkit/hkworkoutsortidentifierduration
---

# HKWorkoutSortIdentifierDuration

A constant for sorting workouts based on their duration.

## Declaration

```swift
let HKWorkoutSortIdentifierDuration: String
```

## See Also

### Specifying sort identifiers

- [HKWorkoutSortIdentifierTotalDistance](healthkit/hkworkoutsortidentifiertotaldistance.md)
- [HKWorkoutSortIdentifierTotalEnergyBurned](healthkit/hkworkoutsortidentifiertotalenergyburned.md)