The starting point of this mountain bike tour is the village of Bonaduz, which together with Rhäzüns forms an actual high plateau. Bonaduz is also the gateway to the Rhine Gorge Natural Monument.

After crossing the idyllic forest landscape near Bonaduz on well-maintained forest paths, an ascent follows on a road with little traffic, which leads to Sigl'Ault with great views. This is soon followed by a single trail that leads smoothly down to the panoramic road above the Rhine Gorge. The "Ruinaulta", as the gorge is called in Romansh, is one of the most magnificent and diverse landscapes in the Alps, which was formed by a landslide 10,000 years ago. You follow this road with a magnificent view down below, past the "Zault" viewing platform (photo stop recommended), before finally diving back into the forests and driving back to Bonaduz on extensive forest paths.

- The chairlift Tgantieni, Scalottas and Weisshorn 2nd does not transport downhill bikes (double crown fork)!

- Transport of bikes with a maximum weight of 25 kg: Gondola lifts Chur-Brambrüesch 2nd section.

No less than five cable cars make the ascents on this round tour easier for you. You start with the two chairlifts from Lenzerheide via Tgantieni to Piz Scalottas. Once there, a good 4 km long, partly steep descent to Churwalden awaits you. On the beautiful single trail along the elevation curve you pass the Junehütte - take a moment and enjoy the wide view over the whole valley. After Parpan you pass lush alpine meadows to the Maiensäss settlement Mittelberg - Büel.

The final ride leads to Runcalier, over a short stretch on the Tschiertschen main road and a flowing trail in the Steinbach forest to Chur. Here the mountain railroad takes you via Känzeli up to Brambrüesch. From Brambrüesch you continue to Churwalden. From Churwalden the panoramic cable car Heidbüel brings you back up to 1930 m.a.s.l. After a short transfer on the gravel road a last trail highlight awaits you from the mountain restaurant Spoina to the Heidsee between Lenzerheide and Valbella.

Whole tour: 42 km (5 km chair and gondola ride)

Taking the Tgantieni chairlift, the first step of the tour is comfortably begun. Above lies the alpine path, going to the Tgantieni Mountain Hotel and then further onto the Bergbeizli (small mountain pub) Spoina. The first part runs over well-prepared forest roads with occasional glimpses of Lenzerheide and Heid lake. The gentle descent passes the Valbella hostel and goes through Parpan village back to Churwalden.

A further nature trail brings you to Passugg, which is the source of a famous mineral water. The roaring creek Rabiosa, in Romansch «The Raging», cuts its way through the Passugg gorge. In 1863 this spring was rediscovered, which is known today throughout Switzerland as the mineral springs of Passugg. Next you drop down to Chur and take the gondola back up to Brambrüesch. From here descend again on a tarmac surface to Churwalden, where you take the chairlift Heidbüel.

Guidelines

• Duration: approx. 6 hours
• Distance: 12.5km
• Altitude difference: +850m/-800m

Guidelines

• Duration: approx. 2-3 hours
• Altitude difference: -1530m
• Distance: 7.8km