2ND-3RD BASELINE???

HTBT
But the runner establishes his baseline. No defensive player can block his path without the ball. All judgement.
If the runner had to go around a defensive player (without the ball) to get to the base, then IMO that is obstruction, if he had the ball and the runner went around him farther than a step and a reach he would be out for leaving the base path.
What I have noticed is that some Umps Are a little weary of calling this, but most of the obstruction calls I have seen happen during the rundown.
I'd be more concerned with my team chasing him to third instead of back to second.

The ump had everything wrong. This was blatant obstruction.

A runner's "baseline" is established when there is an attempted tag of him. No tag attempt - no baseline. It is impossible for a runner to be out of his baseline unless a fielder is attempting to tag him.

If and when a tag attempt is made, the runner's baseline is established as a direct line between where he is and the base he is headed for. In order to be called out for running out of the baseline, the runner must be more than three feet away from this line (approximately a "reach").

The "step and a reach" is not applicable to this rule. It applies to the protection against obstruction to which a fielder is entitled after he misplays a batted ball. If he is within a step and a reach of the ball, he is still protected. Anything farther and he may be guilty of obstruction.

Question??
What criteria is used during a tag play when the runner is too far from the base to slide but still needs to avoid?
We are specifically taught something here and I want to see what the rest of the world uses.

Criteria for what?

Being out of the baseline? Same as above.

Interference? Get down (slide legally), go around (avoid) or give up.

Obstruction? Without possession of the ball, the fielder must allow the runner access to the base.