I have done Croagh Patrick a few times. It is an old pilgrim route and popular with all kinds of walkers. because of it's history and pilgrim Sunday I feel many people underestimate Croagh Patrick. People wear unsuitable clothing, footwear and do not go prepared for the weather which can change very quickly. As recent as last week in the midst of the hottest summer in 42 years the top was covered in cloud, it was cold and windy. 2 mile from car park to top, 2 hours up, 1.5 hours down. Easy to twist an ankle. Easy to suffer hypothermia. But a great walk if prepared properly.