"5 days, just over 100 km in the high Vosges on paths and forest and tarmac roads. I set off with a special pair of poles for the trolley, as I needed my own to walk.
My bag weighed 15 kg with 4 days' food plus 2 kg of water. On forest or tarmac roads with no inclines, it was a delight. I hardly felt the trolley at all, 1 kg on my hips and nothing when the road was slightly downhill. Mind you, you need to organise your bag carefully so that as much weight as possible is on the wheels.
I used a wide belt to pull the trolley, to which the two fastening systems (carabiners) were sewn.
To sum up, I really appreciated the trolley, without which I wouldn't have been able to hike this long distance.