Hi
The following steps may help:
On your iPhone, go to: Settings > Privacy > Location Services:
- Check that Location Services (the main setting at the top) is turned on.
- In the list of apps beneath, check that Apple Watch Workout and Nike+ Run Club are each set to While Using.
- If each setting is already enabled:
- Try briefly turning off Location Services and then turning it back on again.
- Try briefly changing the setting for Apple Watch Workout and the Nike app to Never and then back to While Using.
- Also enable options under System Services including Motion Calibration & Distance, Wi-Fi Networking and Mobile Network Search.
Restart both your iPhone and your Apple Watch (normally), turning both devices off together, then restarting your iPhone first:
If the issue persists, I suggest that you consult Nike's support resources and/or contact Nike for assistance with using their Nike+ Run Club app:
Nike+ Run Club Support resources:
Contact Nike (support is offered by phone and via social media):
More information: