Running and Losing Your Dexterity Bonus

[Archaeik]

Run wrote:

You are swift of foot.

Benefit: When running, you move five times your normal speed (if wearing medium, light, or no armor and carrying no more than a medium load) or four times your speed (if wearing heavy armor or carrying a heavy load). If you make a jump after a running start (see the Acrobatics skill description), you gain a +4 bonus on your Acrobatics check. While running, you retain your Dexterity bonus to your Armor Class.

Normal: You move four times your speed while running (if wearing medium, light, or no armor and carrying no more than a medium load) or three times your speed (if wearing heavy armor or carrying a heavy load), and you lose your Dexterity bonus to AC.

1. I can't seem to find where it states that last bit in any of the sections about running.

2. My GM is under the impression that running also provides a +4 bonus to AC(I'm not sure if that's only vs ranged or not, but the most recent case was ranged).
(Now, to be fair, it was a flying creature moving at 4x, does that have different rules? I already looked under Fly and didn't see any, other than you aren't FF while flying)

Is there any justification for that in the rules?

2b. Per Fly, does not being FF mean you also can't be denied your dexterity to AC??

3. Combat Modifiers
The AC chart calls out "loses dexterity to AC" and "is denied its dexterity to AC" separately.
Is there any real difference? (Do you seriously not get SA vs cowering and stunned opponents? -blinded is on that list too)

Primarily I'm curious about #1, I'd really like to find the rule.

[Blue Star]

That's because it's not a rule ctrl+f movement:http://paizo.com/pathfinderRPG/prd/additionalRules.html

[Archaeik]

Please kindly inform the Run feat of this.
I've already searched through the rules I thought it would be under.
And the forums, found a few things, but not this.

I guess this is legacy from 3.5?
The question is, does it still apply? and how?

[wraithstrike]

1.

prd/combat chapter wrote:

Run

You can run as a full-round action. If you do, you do not also get a 5-foot step. When you run, you can move up to four times your speed in a straight line (or three times your speed if you're in heavy armor). You lose any Dexterity bonus to AC unless you have the Run feat.

2a. That rule does not exist. Why give you a +4 to AC if they are going to make you lose your dex bonus to AC. The mobility feat gives a +4 when provoking. Other than that I have no idea where he got that from.

2b. Losing dex is only one part of being flat-footed. You can lose dex without being flat-footed since flat-footed is a condition just like being stunned is.

3. There is not really any difference between the two terms, but the ones with the number 3(pinned and helpless) are situations where you are flat-footed. The should have just said flat-footed for those.

[Archaeik]

Thank you.
I see now, it's under Full-round Actions

Does this rule apply to flying creatures, or is it covered under their FF caveat? (from your other answer it looks like it does)

and 2a. honestly I think it's some legacy 2nd ed rule or long standing house rule(but they act like it's from the a book)

[wraithstrike]

I think the flying creature can still take the run action, but they will still lose dex to AC. I think the logic is that when you move full speed it is harder to control yourself. As an example if you are running full speed in real life, and a pit opens up in front you it is almost impossible to stop or change direction.

2A:Sometimes people have a houserule for so long they think it is a real rule. I have done that before. I would ask him to show it to you in the book.

[DigitalMage]

Pathfinder RPG 5th Printing PDF page 188 wrote:

Run

You can run as a full-round action. If you do, you do not also get a 5-foot step. When you run, you can move up to four times your speed in a straight line (or three times your speed if you’re in heavy armor). You lose any Dexterity bonus to AC unless you have the Run feat.

Emphasis mine. The Run Feat is correct, you do lose your Dex Bonus to AC when running.

[Kobold Catgirl]

Bump. Do you lose the Dex bonus until your next turn, or just literally while running?

[James Risner]

Kobold Cleaver wrote:

Bump. Do you lose the Dex bonus until your next turn, or just literally while running?

You lose until the full round action (Run) is complete.

[Kobold Catgirl]

So, the only way that penalty comes up is AoOs?

[James Risner]

Kobold Cleaver wrote:

So, the only way that penalty comes up is AoOs?

Or readied actions? Etc.