I did this tour yesterday, but I was very disappointed and can’t recommend it: First, you ride for a very long time on paved and gravel roads, and as soon as the singletrack begins at Untere Nüenalp, the fun is already over—the trail is extremely narrow and steep, secured in places with chains and ropes, so you can only push your bike there. The Naturfreundehaus on the Fronalp is also anything but hospitable: Since there was a large group there, I did have a seat, but I didn’t get any food at 12:30 p.m.... So all that was left was the descent into the valley, which wasn’t always easy either, as it was very steep and heavily obstructed.

Great tour with a scenic ascent. The first part of the downhill is quite challenging in places (steep, with roots and steps), after that it becomes quite flowy. Thanks for the great tour

I rode the tour from Näfels yesterday. I find it a very tight S2. Especially as it only goes down steeply, sometimes with steps. There was never any real flow.

But it's a tight S2. I've seen easier ones. If you can't master it, you often have to dismount in the middle section. But there's a lot of fun further down, where it gets easier.

Rode the tour yesterday, already well rideable! Up to the Naturfreundehaus there are still 2-3 snow fields to cross. Don't quite understand the discussion about difficulty. The trail is clearly S2 in our opinion. A good starter tour after the winter break :-)

Rode today, started in Näfels. A very nice, rather easy but worthwhile bike tour. Technique: Only a few places 3 instead of 2. Should serve as an orientation :-).
At Unternüenalp, simply follow the gravel road uphill, which then turns into a beautiful singletrail that rides down to Mullerenberg.
A stop at the Naturfreundehaus is worthwhile. Closed on Mon+Tues!
The way back Glarus - Näfels is just a cycle path - not exciting but a successful coasting.
Have fun on the tour!

The ascent is very nice: good views and not very steep. Only KM 6-8 on a road that is often used by motorcycles, but I didn't mind. The first trail is also fun, but currently closed during the week due to logging (according to the sign: Mon - Fri, 10 am - 5 pm). Rode it today on Sunday and there are still a few trees in it, but you can lift over them.
The ascent to the Naturfreundehaus is relatively steep again. I spontaneously made the descent via the trail to Mollis (see singletrail map) and it's awesome, but also technically demanding.

is indeed a very nice tour! to be recommended! however: in my opinion, the riding technique rating is a bit too low. according to the single trail map, there are some black and many red-dotted sections (challenging/difficult). for experienced MTB riders, these trails are truly a 'feast' - but it was definitely too difficult for my companion.

A great tour with a wonderful panorama. Well worth it! Tour description is correct, everything is easy to find. Alternatively, you can also do the tour via Rietegg, very flowy at the start, but becomes challenging in the forest (switchbacks!). The long trail back into the valley starts directly at the Naturfreundehaus. The first part in the forest is difficult, then very flowy and fun. :)

I

Checked

Great tour - the path from Unter Nüen is currently closed due to the risk of falling rocks. Even if you ride up the road to the end, there are still about 500m of closed trail at the top. The hairpin bends then back down to the official route are only rideable with experience.

I didn't grow up there, but I still enjoyed the great trail from Unternüenalp to Mullern and then especially down to Glarus. Can't endorse either Alex's or Jack's comment.

I know this route very well as I grew up there.
Beautiful tour, however, just as Alexander described it.

The comments could not be much more different.

Super nice tour with a pleasant ascent (only 3 km on a busy road ...) and a beautiful, flowy and fun long singletrail back to Glarus. The tour description is absolutely correct.
Have fun everyone :-)

And where is the Map?

How do I get to the gpx track? I have a webcode, but can't find it.

Great panorama but far too little single track! I estimate a single track share of 20%. A large part of the ascent is on a road with lots of motorcycles thundering past you at >= 80 km/h. With a few exceptions, the single trails on the descent alternate with gravel paths and roads so that there is hardly any real flow. You can skip the last 13 km and take the train in Glarus unless you want to spend more time on a road at the end.

It would be nice if Ride, especially now that you have to pay for the maps, would code the map and the track with a trail type (road, gravel path, double track, single track) so that you know what you're getting into. Such a uniform red line that anyone could have made with a cheap GPS device is not exactly a professional representation when you compare it to other magazines.