First off, it’s legal on public two tracks.
Second, the answer is, it depends.
I’ve thought about this approach quite a bit. I would have brought my mountain bike last year if I had room for it in my Camry when I hunted my 0 point unit.
If it’s a two track you can legally access via truck, just drive on it like everyone else.
If you have to walk your bike overland to access the road, then definitely maybe. I would not ride your bike overland as you could probably do ok riding around sage but the little cacti would likely destroy both your tubes and eventually the tires. Stick to the two tracks.
Something else to consider is topography. I kind of looked at it but not as closely as I should have. You can look at a map, as I did, and think hey I only have to carry my bike about 600 yards and I can ride for miles - no big deal. It the plains it’s relatively flat, blah blah blah. Until you realize there are two or three washes/cuts between you and that road that require you to lose 75 of elevation and then gain the 75 feet back and do that two or three times - not worth it.
I think the first question I asked on a forum was “how much ground can I cover.” The consensus (if i remember correctly) was 2-4 mph depending on terrain. Useful info if your on foot only and trying to approximate your range.
Not the first time I’ve said it (kinda proud of my stubbornness overcoming zero experience), but I did 20 miles in a day and that included about 2,500’ of elevation gain/loss. Half of the miles were loaded down. I’m not in great shape. I could have easily done more with a buddy to share the load.
Hopefully you find the info useful. All that said, I do have a 0 point unit I’ve OnX scouted. I will definitely bring the bike on the hunt if I ever pull it as a 2nd or 3rd choice. Good luck - it’s a blast.