This has been explained 100x. You can easily get past it by running in the correct area instead of walking.
I know. I have done it. Tested it. (after being told it couldn't work and wouldn't work which pissed me off) It is obvious, the game is checking the state of the run button, it does not "know" you are running.
If you tried running past it and it didn't work, you are not running in the correct area.
If you are using a really old auto run mod, I can't be sure. Dziugo's and Menu Overhaul the above applies to.