way back—
1. far from the front part of smth.:
- I noticed a faded whiskey box way back under the stairs.
2. in a remote rural area; far away:
- Blackall was much the same as any other township “way back.”
3. a long time ago:
- We do not know who first brought Christianity to this country way back in the days of the Roman Empire.
way behind—far behind smth.:
- Pet foods come sixth in the consumer top ten. Baby food lags way behind.