Looking on the internet deeply has found these results:

in the long term is the most popular phrase on the web.

in the long run 116,200,000 results on the web	in the long term 1265,000,000 results on the web More popular!
Some examples and use cases from the internet:	Some examples and use cases from the internet:
Perhaps in the long run we'll be able to convince her. But... in the long run, dating two guys is unsustainable. Not if it hurts us in the long run. It can be a bit tiresome in the long run. ...won't be healthy in the long run. This tension you bringing into this relationship won't be healthy in the long run. I mean it'll be cheaper in the long run. You'll be much happier in the long run.	The endless culling of herds is neither intelligent nor appropriate in the long term. This age structure will in the long term lead to a shortage of qualified workers. But it will benefit our environment in the long term. These massacres must not deter us from working for peace in the long term. In my experience, workers are always willing to accept austerity measures if these keep their jobs safe in the long term. That is unsustainable in the long term. Few side effects, safe in the long term. The EU must create sustainable fishing which can survive in the long term.

in the long run

116,200,000 results on the web

in the long term

1265,000,000 results on the web

More popular!

Perhaps in the long run we'll be able to convince her.
But... in the long run, dating two guys is unsustainable.
Not if it hurts us in the long run.
It can be a bit tiresome in the long run.
...won't be healthy in the long run.
This tension you bringing into this relationship won't be healthy in the long run.
I mean it'll be cheaper in the long run.
You'll be much happier in the long run.

The endless culling of herds is neither intelligent nor appropriate in the long term.
This age structure will in the long term lead to a shortage of qualified workers.
But it will benefit our environment in the long term.
These massacres must not deter us from working for peace in the long term.
In my experience, workers are always willing to accept austerity measures if these keep their jobs safe in the long term.
That is unsustainable in the long term.
Few side effects, safe in the long term.
The EU must create sustainable fishing which can survive in the long term.