PA-28 Cherokee/Archer/Dakota/Pillan/Warrior
Flight Crew Private
Flight Crew Last 90 Days 12.6; Flight Crew Total 139; Flight Crew Type 135
Human-Machine Interface; Training / Qualification
Deviation / Discrepancy - Procedural Published Material / Policy; Ground Event / Encounter Loss Of Aircraft Control; Ground Excursion Runway
Flight Crew Regained Aircraft Control
Human Factors
While landing on Runway XX at approximately 70 KIAS and power pulled to idle; after touchdown; plane started to veer to the left. Plane ultimately veered off of runway onto grass; where it came to a near-complete stop. Power was added to keep the plane moving in order to avoid getting stuck in the grass. Tower asked if we were OKAY; which I responded in the affirmative.Tower instructed us to re-enter [Runway] XX; and taxi to the T-hangars (with runway crossing and holding instructions included). We inspected the airplane and there was no apparent damage to the plane; just grass stains on the wheel pants; which we cleaned up. The airport operations reported there was no damage to anything on the runway environment. And there were no injuries to me (PIC) or my safety pilot passenger.The airplane was inspected the following day and was found to be in good operating condition and has been successfully flown since; with no reported issues.I believe the cause was my feet inadvertently slipped up the pedals and activated the toe brakes after landing; with the left side braking more strongly. There were some tire marks on the runway that seem to support this; according to the ground ops personnel.I plan to go up with a CFII as soon as possible; paying special attention to my foot position on takeoffs and landings. I may also fly with the seat farther back to make it less likely that my toes will accidentally be on the brakes.
PA-28 pilot reported a runway excursion on landing rollout.