This is an eighteen kilometers walk that will take about six hours to complete. It involves about 500 meters of ascent and 1400 meters of descent.
Start the rout by taking the Grosti gondola lift from the hill side above Madonna di Campiglio to Passo del Groste. The walk is then a tour around a series of refuges. The first one is the Refuge Tuckett & Sella. This has some nice buildings in an excellent setting. You then carry on to Refuge ai Brentei, and from there to Refuge Casinei, and finally Refuges Casinei and Vallesinella.
You can get a taxi from Vallesinella back to Madonna di Campiglio if you wish, but it is better to take a further one hour and walk back down via Refuge Cascata di Mezzo. The reason for the extra walk is that you will be able to see the spectacular waterfalls of the Cascata di Sotto.
Reference – Shorter Walks in the Dolomites by Gillian Price. Published by Cicerone , UK. ISBN 1-85284-351-9.