[RWD version 1 ] Not having ever visited Scarr Mountain before, we parked at the carpark above Brockagh Resource Centre in Laragh. The trail starts on the eastern edge of the carpark and joins up with the Wicklow Way after a short distance. Head over across the river and up on to the Military Road. This is a lovely well maintained track. Make your way north eastwards up onto Paddock Hill. From here the good views begin, so be sure to constantly look over your shoulders. There is a distinct trail all the way north up on to Scarr. Be prepared since on a bad day there is absolutely no shelter up on Scarr Mountain.
Take plenty of time to soak up the athmosphere and enjoy the 360 degree views. Continue on down the far side heading for Kanturk and at the saddle take the track down left to the Glenmacnass Waterfall. (It is not much extra effort to visit Kanturk before returning to this saddle). At the far side of the carpark the water runs smooth and slow and it is a perfect spot to languish for a while and enjoy a bite to eat. Head across the Glenmacnass River on the stepping stones and up through the northern edge of the woods. It is quite steep in here so you will need to zig-zag up. Near the top there is a indistinct path out to the right onto open ground. Make your way up the shoulder of the hill and bear south west for the top edge of the next wooded area.
From there a trail leads back along the border of the woods on to an extraction road. You can use this road to bring you straight back to the carpark or be more adventerous and veer further west to the right of Mall Hill to reach Brockagh Mountain and then head south east on to Brockagh Mountain SE Top. From there just follow the trail back down to the carpark.