I completed the Senda Sursilvana from Trun to Flims unsupported.
I carried all my food from the start, mainly gels and Snickers, and refilled my water only from natural springs and streams along the route. I did not use huts, shops, caches or receive any outside support.
I stayed at Casa Tödi in Trun before the attempt and at Arena Guesthouse in Flims after finishing.
The route was considerably more technical than expected, with many rocky and blocked sections. During the first climb to Punteglias in complete darkness, I briefly went off route in the rocky terrain before finding the correct trail again.
Towards the end of the route, I also had to stop briefly for an Almabtrieb before continuing with the long rocky descent to Bargis and the final section to Flims.