Annapurna Base Camp trekking permit required.
Need to Know
On the way up (at the avalanche sign), we had to take a detour, because another guide told us there was some blockage ahead, but it turned out fine cause we saw people walking down across the river). The detour is a tad rockier but I personally liked it better. The main road looked like mostly steps.
For the most part it was gentle/medium with a short, steep climb at the end. There's a guest house on the right (lower MBC), and if you veer left like we did you'll hit upper MBC; it had nice views from the guesthouse.