Rode the tour on 20.9. The mix of remoteness, fantastic scenery and sporting challenge is brilliant. A bit of pushing and carrying is required up to the Fimber Pass - but max. 30 min. Down into the Sinestra Valley it takes a bit of concentration, but is easy to ride. An overall MTB highlight.

A wonderful tour! As already mentioned, the trail is closed after the Hotel Sinestra. There is a very nice alternative following the road a little above Sinestra.

We did the tour on July 18th coming from Ischgl in the variant over the Fuorcla Val Gronda. We had to push the bike over the Fuorcla and the Fimberpass for about 30-45 minutes each. I rode everything on the Greitspitz, but it was hard on the limit :).
The condition of the route is good, a bit of cow dung on the descent into Val Sinestra. Downhill, however, everything is rideable. As mentioned in the previous comment, the road from Griosch is closed during the week. This can be found on Schweizmobil under "Closed hiking trails". However, we were told on site that you can still drive through and the road was completely free to drive on. The best thing to do is to ask in the restaurant about the driving ban.
If you're coming from Ischgl, the 13:44 Postbus from Ramosch to Samnaun is the last option for getting back to Ischgl by train. So we had quite a bit of time pressure and rode from the pass to Ramosch practically without a break.
A strenuous but rewarding tour from Ischgl and much more exciting than the groomed trails in the ski resort itself.

We rode the tour today. The acclimatization from 1200m above sea level to over 2800m was not easy for us, as we had to climb a few ski slopes straight away - you'd run out of breath.
But we were rewarded with a wonderful panorama (if you ignore the ski lifts). Not a soul on the way.
The trails are slightly shaped but very nice to ride. Unfortunately, every obstacle has been removed.
The ascent to the Forcola da val Gronda at 2752m was exhausting - we could hardly ride many meters and had to push and carry.
But the view from this altitude was once again magnificent. The trail down to the Heidelberghütte was a pleasure - here, too, every obstacle was removed.
At the Heidelberghütte, we were served royally and were able to tackle the Fimberpass refreshed. About 1/2 of the route is rideable if you still have strength. The descent into Val Sinestra was challenging and to our liking: lots of loose scree, technical passages and wonderful views.
The root path from Zuort to Hotel Sinestra is not easy to ride and once again requires full concentration.
At the bridge, the left bank path is completely closed to pedestrians and bikers. We took the trail above the hotel and then took a leisurely ride back to Scuol.
An absolute MUST tour :)

We rode the tour on July 28.

The path is very well maintained, there are only two small snow fields that can be crossed without any problems. We did the recommendation from Zeblas Joch up to Fuorcla Val Gronda - top. At the bottom at Val Sinistra there is a detour due to a landslide.

Ridden on September 5, 2023
Very nice tour from the Zeblasjoch. The Samnaun side is necessary for the ascent, whether by cable car or not, but the scenery only becomes beautiful after the ugly ski arena.
The variant via Fuorcla val Gronda is highly recommended. The descent from the Fimberpass is pure flow, beautiful to ride, but I wouldn't call it crisp. Not too technical, only the upper part with rough gravel. I have the feeling that a lot has been "leveled out" in recent years.
In the lower part, after the Hotel Sinestra, there is no real flow, but the tour soon comes to an end here too.
All in all, highly recommended as a day tour.

Rode the tour today. Very nice tour. No snow anywhere, dry as dust. A smooth, safe S2 is obligatory, more difficult sections can be conquered on foot without losing too much time.
Instead of taking the boring Kugelibahn trail from the top station of the cable car to the chairlift, you can also take the gravel road directly from the top station of the cable car and reach the route published here below the Salaserkopf. It could hardly be more strenuous.
At the Zeblasjoch, instead of taking the Zeblastrail down into the valley, follow the slope and up to the Fuorcla da Val Gronda. This is more strenuous and involves a lot of pushing. But the scenery is more beautiful and the descent from the Fuorcola towards the Heidelberger Hütte is a pleasure. This variant is also indicated as such on the region's website.
There are various options for the descent through Val Sinestra. After reading the comments here, we decided against the ride variant and followed the variant on the region's website. This leads over a lot of forest road and finally a hairpin bend trail via Sent to Scuol. If you prefer a little more up-and-down riding, take the route as described on the regional website for the descent from Fuorcla Campatsch.

The tour can be recommended almost unreservedly, with the following comments:
In order to avoid the ski area, which is not particularly pleasant as it has been built up and leveled, we decided to avoid the ascent via the cable car right at the start of the tour and followed the signposted route 443 from Samnaun village up to the Zeblasjoch. However, this route mostly follows the valley descent of the ski area with ramps of well over 20% and is correspondingly exhausting and uneventful. So perhaps it would be better to take the cable car up to the ski area.
From the Zeblasjoch, you should definitely head for the Fuorcla val Gronda and take the half-hour walk. The descent towards the Fimberpass is simply a pleasure and offers a great biking experience. The descent from the Fimberpass is not technically difficult, but it is much rougher to ride and super cool. We then rode the hiking trail from the Zuort farm to the Hotel Val Sinestra and then switched to the road towards Sent. There are some very cool passages and two suspension bridges to cross on this hiking trail, and you'll also run over a few rough root fields here.

All in all, a super tour that will certainly be remembered for a long time, provided you are prepared to push your bike for about an hour (in wonderful surroundings).

I rode the tour last weekend with a group of 8 people. In my opinion, the reputation of the tour is better than the tour itself. Why?
You can't simply combine ascent aids (cable car) and idyllic mountain scenery. Until shortly after the Gleiterspitz, the mountain is already very built up. The subsequent descent is crisp in the upper part but cool to ride in the lower part, even if one or two passages are a bit rutted. The descent from the Zeblasjoch down to the Vesilbach is simply a deep (when wet) muddy gully - the descent is not much fun. We skipped the (supposed) trail into the Fimba valley and followed the gravel road - as I've seen other groups do.
The ascent to the Heidelberger Hütte is pure pleasure, great scenery, pleasant gradient - good to prepare for the strenuous climb (with lots of pushing passages) up to the Fimberpass. The descent from the pass starts crisply and requires maximum concentration on certain passages, but is rideable and fun throughout.
The Val Sinestra is a scenically beautiful, wild valley. However, the trail with its "ups and downs" demands a lot of grit and is very exposed in places. If you are no longer completely clear (fit) in the head, the small ascent (approx. 60 m) up the access road from the Val Sinestra hotel is a good option. From here you can practically "roll" directly down to Scuol.
Conclusion: a strenuous tour, but one that doesn't make it into my top 5, as some passages are far too rough for that

You can, or could a few years ago, ride from the Zeblasjoch over the Fuorcla da Val Gronda. With a beautiful descent in the direction of the Heidelberger Hütte, which you don't head for, however, but go straight into the steep ascent to the Fimberpass.

Very beautiful landscape but we didn't ride very much. The hiking trail from Zeblasjoch - Gampenalpe is really not rideable. From the Fimberpass into the valley there are some beautiful, but also very technical passages. I missed the flow on this tour.

On the whole a great tour. Rode the tour on 15.7.18. I can only agree with Stäbock. We walked/rode the rough trail after the "Bachbeet". It wasn't a highlight and at the end you end up in the rubble with excavators and have to find your way out. Heidelberger Hütte was great...a refreshment before the next carrying passage. The trail after the Fimberpass is great, but the final trail to Ramosch is just tedious and no fun. Running-riding-running...always alternating.

Super tour! Ridden on 01.07.2018
Only the trail from Zeblasjoch to Gampenalp resembles a heavily washed-out stream bed in the upper part. In the lower part, the trail is hardly rideable as it is neither used nor ridden on. So we rode the last part down to Gampenalp on the gravel road. A leisurely ascent to the Heidelbergerhütte with a delicious Kaiserschmarrn.
The ascent to the Fimberpass was mostly pushing and carrying. Great descent... the trail from Sinestra towards Ramosch is partly slippery. Apart from the 5 or so passages where you have to push, it is a real treat.