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# HKMetadataKeyCrossTrainerDistance

The workout distance displayed by a connected GymKit cross-trainer machine.

```
let HKMetadataKeyCrossTrainerDistance: String
```

## Discussion

Set this key on a workout sample representing exercise on a GymKit cross-trainer machine (such as an elliptical cross-trainer). Set its value to an [`HKQuantity`](/documentation/HealthKit/HKQuantity) object with a length unit.

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