Once you arrive in Bethesda, drive through the town until you reach the bend in the middle of town, just opposite the Queen Victoria pub, when you get around the bend you will see a small supermarket, here you will see a turning on your left that goes up hill towards Gerlan.
Half way up this fairly narrow road is a small roundabout, keep going on up the hill until you eventually see a turning left.
Keep going along this road and in around 300yds on your left you will come to a very Welsh speaking pub called Yr Sior which means The George in English.
Around the corner from YR Sior is a carpark for around twenty cars, used mainly by the locals to park their vehicles, but over the many years ive never failed to find a parking space.
Its free to park, and is as safe as houses, ive left my car here for well over seven hours on occasions and its never been touched.
From this carpark, its about a mile and a half along the upper roads of Bethesda and Gerlan to the solitude of the Carneddau.
Its exactly 21.2 miles from Llandudno to my usual parking place in this carpark.