I rode the tour yesterday. Unfortunately without reading the comments beforehand. It seems that the GPX track has still not been updated since the first comment in 2018. Too bad...

We did the tour at the weekend. From Rothenthurm it's a bit boring up the mountain on an asphalt road. Once at the top, it's a fun ride up and down on natural paths. The first challenge comes on the south side of the Myten: the trail is short, but it's a tough one! Based on the comments about the route and tips from other MTB riders we met, we didn't take the route described but skipped the wildlife sanctuary behind Holzegg. Too bad, as the trails there looked very interesting. Instead, we rode the Direttissima from Holzegg down to Brunni (part of the IRON BIKE RACE): extremely steep in parts... If I had known that, I would probably have ridden it differently (see SwitzerlandMobility Route 967). Especially as the weather was good that Sunday and there were lots of hikers on the mountain trail. Most of them probably thought how stupid you have to be to ride this trail on an MTB (I did too in some cases). The last stretch down to Alpthal, back up the mountain and down to Rothenthurm can be saved if your strength is flagging. The ascent is just as boring as at the start and the descent is a gravel highway to Rothenthurm (no singletrail). All in all, it was a varied tour with magnificent views and the condition of the route was absolutely fine, despite the seemingly endless rain recently.

I rode the loop again today, shortened. You don't miss much in terms of trails on the southern loop. Did the Hagenegg-Nüsselstock ridge tour again. Still a few snowfields, but in a week's time definitely good. Today I went to Trachslau instead of Rothenthurm (Süloch Trail). Very fun (S2) trail, so if you don't have to return to the car, I highly recommend this descent! GPX: https://link.locusmap.app/t/wfzw9s

Addendum to my last comment: The recorded route from Holzegg to Haggenegg leads through a wildlife rest area and is closed to cyclists at the Holzegg restaurant with a no cycling sign. I had ignored this and rode the route anyway, was caught and reported by the gamekeeper and got a hefty fine, including fees/court costs totaling around 500 francs. In the meantime, I have also studied something about such wildlife rest areas and can now agree with the driving ban and will not ignore it again, not only because of the fine, but also for the sake of the animals. The correct way around is via Brunni. From the Holzegg restaurant next to the closed route there is an indicated mtb route that leads down to Brunni but is supposed to be difficult. An easier descent to Brunni is mtb route 967, which rides down from Müsliegg to Brunni and up to Haggenegg on mtb route 2.

Two days ago I did a tour around the Mythen, not exactly like the tour suggested by Ride but partly on the same paths, but in the opposite direction. In terms of difficulty, my tour was not very demanding, but the panorama was fantastic. I have made the tour available on YouTube: https://youtu.be/OAf2K1ZUIAE

The video is for indoor cycling on bad weather days and also for planning your own tours. Many people also watch such videos to relax or simply as a travelogue and documentary.

Did the tour today as recommended by Mäkke and Gottwald. That's the only way it really makes sense. Here are my additions no. 4 and 5:
4) With cows, the ridge around the Näbekenfirst as suggested by Mäkke also seems to be a popular hike, in parts well trodden. With the ups and downs and yet frequent dismounts, it does take a while.
5) Only tackle the whole thing when it is really dry. Now it is a muddy affair with alternating slippery roots and boggy rest. If it dries out properly, it's certainly good. I found the descent from Nüsellstock challenging, I mainly pushed down, but it's not long. The path may also have suffered from the recent storms. You can also push the bike to the summit and then descend directly from there on the edge, which is better.

Rode last Saturday as Mäkke suggested, was very nice. I would suggest the following 3 changes:
1. at the southernmost point of the tour (coordinates: 47°01'19.2 "N 8°41'24.0 "E) do not carry the bike up the stairs on the hiking trail 100m as in the GPX, but descend 20m to get straight onto the paved road
2. as suggested by Mäkke, climb up the ridge after the "southern loop" and ride it for 5 km, super trail, great landscape
3. use the trail to descend to Rothenturm ("Biber" at Trailforks) - leaves a few meters before the descent shown here in the GPX.

I subscribe to Ride mainly because of the tour database. I think it would be great if the suggestions and corrections made by users were promptly incorporated into the database!

I don't understand how the tour is presented here. It would be much better to ride straight ahead at the end of the Mythen circuit, at the point where a road turns right and left for the second time and a trail runs straight ahead. You then come to a road just below the Haggenegg restaurant. Turn right for about a hundred meters and then take the hiking trail towards Nüsselstock. If you follow the gpx, you have to go up to the left so that you don't cross the ski lift on the lower road but on the upper hiking trail. It then goes up a bit to the ridge. Follow the trail on the ridge. There are a few counter-climbs with short sections of pushing. Otherwise a beautiful single trail. The descent from the Nüsselstock - you go down to the right just before the summit - is brilliant, I would say S3. You then come down to the road. Unfortunately, we didn't realize the turn-off from the road to the left. It is marked as a hiking trail. So we stayed on the boring forest road.

The scenery is stunning. It's just a shame there are hardly any trails. We rode the tour today exactly according to the GPS. And there were two good single trails on the whole route. The promised single trail to Rothenturm is missing, as are the trails to Haggenegg or in Stockwald. All forest roads.

So if you want a few trails as well as beautiful views, you should not consider this tour. On the other hand, I would rate it as easier than Ride did.