---
title: Workout Metadata Keys
framework: healthkit
role: collectionGroup
role_heading: API Collection
path: healthkit/workout-metadata-keys
---

# Workout Metadata Keys

Constants that can be used to add metadata to workouts.

## Topics

### Workout Type

- [HKMetadataKeyActivityType](healthkit/hkmetadatakeyactivitytype.md)
- [HKMetadataKeyAppleFitnessPlusSession](healthkit/hkmetadatakeyapplefitnessplussession.md)
- [HKMetadataKeyCoachedWorkout](healthkit/hkmetadatakeycoachedworkout.md)
- [HKMetadataKeyGroupFitness](healthkit/hkmetadatakeygroupfitness.md)
- [HKMetadataKeyIndoorWorkout](healthkit/hkmetadatakeyindoorworkout.md)
- [HKMetadataKeyWorkoutBrandName](healthkit/hkmetadatakeyworkoutbrandname.md)

### Cycling

- [HKMetadataKeyCyclingFunctionalThresholdPowerTestType](healthkit/hkmetadatakeycyclingfunctionalthresholdpowertesttype.md)

### GymKit Fitness Equipment

- [HKMetadataKeyFitnessMachineDuration](healthkit/hkmetadatakeyfitnessmachineduration.md)
- [HKMetadataKeyCrossTrainerDistance](healthkit/hkmetadatakeycrosstrainerdistance.md)
- [HKMetadataKeyIndoorBikeDistance](healthkit/hkmetadatakeyindoorbikedistance.md)

### Intensity

- [HKMetadataKeyAverageMETs](healthkit/hkmetadatakeyaveragemets.md)
- [HKMetadataKeyPhysicalEffortEstimationType](healthkit/hkmetadatakeyphysicaleffortestimationtype.md)

### Skiing and Snowboarding

- [HKMetadataKeyAlpineSlopeGrade](healthkit/hkmetadatakeyalpineslopegrade.md)
- [HKMetadataKeyElevationAscended](healthkit/hkmetadatakeyelevationascended.md)
- [HKMetadataKeyElevationDescended](healthkit/hkmetadatakeyelevationdescended.md)

### Speed

- [HKMetadataKeyAverageSpeed](healthkit/hkmetadatakeyaveragespeed.md)
- [HKMetadataKeyMaximumSpeed](healthkit/hkmetadatakeymaximumspeed.md)

### Swimming

- [HKMetadataKeySwimmingLocationType](healthkit/hkmetadatakeyswimminglocationtype.md)
- [HKMetadataKeySwimmingStrokeStyle](healthkit/hkmetadatakeyswimmingstrokestyle.md)
- [HKMetadataKeyLapLength](healthkit/hkmetadatakeylaplength.md)
- [HKMetadataKeySWOLFScore](healthkit/hkmetadatakeyswolfscore.md)
- [HKMetadataKeyWaterSalinity](healthkit/hkmetadatakeywatersalinity.md)