Below the parking lot you cross a stream on a culvert and hike along the southern edge of the Blaa Alm until the trail leads up into the forest, then slightly ascending to the Fludergrabenalm. At the large crossroads there, keep to the left and climb the marked path (Nordalpenweg, Via Alpina) up to the Sandlingalm, which you reach after about an hour of ascent.
At the upper end of the alpine pasture you step onto a forest path that leads up from the Bad Goiserer side. Follow this for about 200 meters and reach the turnoff to the left for the ascent to the Sandling, trail no. 251. After a steep and secured ascent (beware, especially in autumn always wet and slippery) you reach a "pre-peak".
You often have to descend over high rock ribs and soon reach the actual summit trail. At the junction with trail no. 250, turn left and again climb steeply up to the summit, which is reached after about 3 1/2 hours of walking.
For the descent, path no. 250 to the front Sandlingalm is chosen. This is very steep and secured. There you turn right on the alpine pasture, hike comfortably back to the Ausseer Sandlingalm and take the ascent path to the Fludergraben and Blaa Alm.