Running in world maps

Basically the joypad routine for character mode is a EE/1EAD.

More precisely, this is where the speed is set. It's a matter of checking prior to that if "A" is pressed and double (or increase?) that value. Someone that maybe already messed with walking speed or controller input on world map could probably help you better as I might start saying inaccurate stuff at this point. Remember the dash patch code could (or maybe couldn't) help you:

Code:

EE/1FF5:    A910        LDA #$10
EE/1FF7:    85F3        STA $F3        (Set event speed of map character to normal)