how to sync nike data to nike+ on ipod nano 7G

Check on the iPod's settings screen in iTunes... Select iPod in iTunes (click its device button horizontal bar to show the iPod settings screen. Along the left side (in the sidebar), under Settings, do you see Nike + iPod? If you do, click it. Do you see a setting there to initiate sending data to Nike+? Mine is already set up (with my 5th gen iPod nano), so I don't remember what it looked like before.

It does not appear on any of the iTunes preference tabs; those are related to iTunes (the app) in general, not the iPod. But on the first screenshot (which are the settings for the iPod), in the sidebar, under Settings, as the last item, it should show Nike + iPod. However, that item may not appear there unless you have workout data on the iPod. Have you recorded at least one workout on the iPod?

You have your iPod set to Manually manage music and videos (instead of using automatic syncing). If you have not already, click the Sync button (on the iPod's settings screen in iTunes), to see if that action is needed to sync your workout data. If that existing workout data is old (from before the previous time you connected the iPod to iTunes), you may need new workout data. Also, on the iPod's Summary settings screen, there's a button for Reset Warnings. See if clicking it makes the Nike + syncing message/option appear the next time you have new workout data to sync.

I don't recall needing to set or change anything to start sending workout data to the Nike + web site. iTunes prompted me by asking the first time I had workout data on my iPod nano (after my first run using iPod), and I just set it up (including creating a Nike + user account). The user guide

https://manuals.info.apple.com/MANUALS/1000/MA1624/en_US/iPod_nano_2015_user_gui de.pdf (on page 38)

sounds like what I did.

If other solutions do not help, you may need to try a Restore on the iPod. This erases the iPod, reinstalls its software, and sets it to default settings.

Use iTunes on your Mac or PC to restore your iPhone, iPad, or iPod to factory settings - Apple Support

Your existing workout data (on iPod) will be erased. After the Restore, iTunes treats the iPod like a new iPod, so any existing settings related to Nike + on the iPod and in your iTunes library should be reset to default.

On my older iPod nano, I can use the Pedometer function outside of the Nike + system. Are you going through the iPod screen (and directions) shown in the user guide, on page 36, for Create workouts with music? Those are the workouts being recorded and stored, and sent to the Nike + when you sync with iTunes.

Well, you could use it for recording your walks. However, since the Nike + website tabulates your workout data and tells you things like average pace (for the week, month, all...) and when you achieve a fastest mile, it makes more sense if all of your workouts stored on the Nike + website are from your runs (or all from doing walks).

Thanks for reporting back with the outcome. If I see someone else asking the same question, I know the question to ask FIRST next time (instead of last). 🙂