Where can I park near Portadown station if the main station car park is unsuitable?

Portadown train station is listed for rail Park and Ride.

The official directory also lists parking on Corcrain Road and Wilson Street off Garvaghy Road as being near the railway station. Those are three separate named parking locations, not one entrance. Decide which one to use based on the station approach you need, displayed parking terms and available spaces. For an early train, check your walking route to the correct platform before leaving the car.