No special access issues
From Bolzano or the Brennerpass take the Grödner Tal / Val Gardena Valley to St Ulrich / Ortisei - Wolkenstern /Selva and then Passo Sella.
From Cortina d’Ampezzo, 60 km though Passo Pordoi.
The parking is charged 1.50 € per hour at the very urban Sella Resort, so better stay 300-400 m down the road (count +10 min to the blocs). But unfortunately since 2023, the parking lot in the curve at the level of the Malga has become limited in time (60’)...
Trails are generally good and visible, but tend to be hard to follow since you venture at the core of the maze.