I also agree with Larry, who agrees with Pierre, who agrees with Rcarroll, who agrees with mcclary, who agrees with augie.
If they all agree, I'm not likely to disagree...
And I'll be getting toward 320 pretty soon.
And my Dad did this (ran a ground [as he calls it] as the crow flies; in this case as a mole digs if informed by the crow as to direction) on his barn,
...when he found he could not sink a ground rod in beach sand and get a return path.
Now my brother bought the place and is getting things straightened around, in this case, not so straight, but the grounded and grounding conductors will run with ungrounded.